Get rid of externals annoyances by getting argp from gnulib, the way
	it should be done. It may be useful to use gnulib for other things
	too; in particular, current gnulib has just introduced complexity
	metrics and coverage checks.

	N.B. Only developers who wish to change the gnulib setup need to
	install gnulib; all the necessary files for compilation are in
	Subversion.

	Care is required when deciding what files should be checked in and
	which ignored, as gnulib does not (yet) support Subversion. Git users
	will be happy, as they are automatically catered for. I used a simple
	technique: before updating the gnulib settings, I removed the gnulib
	and m4 directories, and then I added to Subversion all the files that
	gnulib created.

	Also, note that because we already use lib/ for the Vaucanson libraries,
	gnulib-tool needs to be invoked with --source-base=gnulib, which is
	where it stores its source files.
	* Makefile.am: .
	* build-aux/link-warning.h: New.
	* configure.ac: .
	* gnulib/Makefile.am: New.
	* gnulib/alloca.c: New.
	* gnulib/alloca.in.h: New.
	* gnulib/argp-ba.c: New.
	* gnulib/argp-eexst.c: New.
	* gnulib/argp-fmtstream.c: New.
	* gnulib/argp-fmtstream.h: New.
	* gnulib/argp-fs-xinl.c: New.
	* gnulib/argp-help.c: New.
	* gnulib/argp-namefrob.h: New.
	* gnulib/argp-parse.c: New.
	* gnulib/argp-pin.c: New.
	* gnulib/argp-pv.c: New.
	* gnulib/argp-pvh.c: New.
	* gnulib/argp-xinl.c: New.
	* gnulib/argp.h: New.
	* gnulib/asnprintf.c: New.
	* gnulib/basename.c: New.
	* gnulib/dirname.c: New.
	* gnulib/dirname.h: New.
	* gnulib/error.c: New.
	* gnulib/error.h: New.
	* gnulib/exitfail.c: New.
	* gnulib/exitfail.h: New.
	* gnulib/float+.h: New.
	* gnulib/float.in.h: New.
	* gnulib/getopt.c: New.
	* gnulib/getopt.in.h: New.
	* gnulib/getopt1.c: New.
	* gnulib/getopt_int.h: New.
	* gnulib/gettext.h: New.
	* gnulib/intprops.h: New.
	* gnulib/malloc.c: New.
	* gnulib/mempcpy.c: New.
	* gnulib/printf-args.c: New.
	* gnulib/printf-args.h: New.
	* gnulib/printf-parse.c: New.
	* gnulib/printf-parse.h: New.
	* gnulib/rawmemchr.c: New.
	* gnulib/rawmemchr.valgrind: New.
	* gnulib/size_max.h: New.
	* gnulib/sleep.c: New.
	* gnulib/stdbool.in.h: New.
	* gnulib/stdint.in.h: New.
	* gnulib/stdio.in.h: New.
	* gnulib/stdlib.in.h: New.
	* gnulib/strcasecmp.c: New.
	* gnulib/strchrnul.c: New.
	* gnulib/strchrnul.valgrind: New.
	* gnulib/strerror.c: New.
	* gnulib/string.in.h: New.
	* gnulib/strings.in.h: New.
	* gnulib/stripslash.c: New.
	* gnulib/strncasecmp.c: New.
	* gnulib/strndup.c: New.
	* gnulib/strnlen.c: New.
	* gnulib/sysexits.in.h: New.
	* gnulib/unistd.in.h: New.
	* gnulib/vasnprintf.c: New.
	* gnulib/vasnprintf.h: New.
	* gnulib/vsnprintf.c: New.
	* gnulib/wchar.in.h: New.
	* gnulib/xalloc-die.c: New.
	* gnulib/xalloc.h: New.
	* gnulib/xmalloc.c: New.
	* gnulib/xsize.h: New.
	* gnulib/xstrndup.c: New.
	* gnulib/xstrndup.h: New.
	* gnulib: New.
	* m4/alloca.m4: New.
	* m4/argp.m4: New.
	* m4/dirname.m4: New.
	* m4/dos.m4: New.
	* m4/double-slash-root.m4: New.
	* m4/eoverflow.m4: New.
	* m4/error.m4: New.
	* m4/exitfail.m4: New.
	* m4/extensions.m4: New.
	* m4/float_h.m4: New.
	* m4/getopt.m4: New.
	* m4/gnulib-cache.m4: New.
	* m4/gnulib-common.m4: New.
	* m4/gnulib-comp.m4: New.
	* m4/gnulib-tool.m4: New.
	* m4/include_next.m4: New.
	* m4/inline.m4: New.
	* m4/intmax_t.m4: New.
	* m4/inttypes_h.m4: New.
	* m4/longlong.m4: New.
	* m4/malloc.m4: New.
	* m4/mempcpy.m4: New.
	* m4/printf.m4: New.
	* m4/rawmemchr.m4: New.
	* m4/size_max.m4: New.
	* m4/sleep.m4: New.
	* m4/stdbool.m4: New.
	* m4/stdint.m4: New.
	* m4/stdint_h.m4: New.
	* m4/stdio_h.m4: New.
	* m4/stdlib_h.m4: New.
	* m4/strcase.m4: New.
	* m4/strchrnul.m4: New.
	* m4/strerror.m4: New.
	* m4/string_h.m4: New.
	* m4/strings_h.m4: New.
	* m4/strndup.m4: New.
	* m4/strnlen.m4: New.
	* m4/sysexits.m4: New.
	* m4/unistd_h.m4: New.
	* m4/vasnprintf.m4: New.
	* m4/vsnprintf.m4: New.
	* m4/wchar.m4: New.
	* m4/wchar_t.m4: New.
	* m4/wint_t.m4: New.
	* m4/xalloc.m4: New.
	* m4/xsize.m4: New.
	* m4/xstrndup.m4: New.
	* m4: New.
	* taf-kit/src/Makefile.am: .
	* taf-kit/src/main.cc: .

	The classic delta iterators are used nowhere, so remove them.
	(Only deltac and deltaf are used.)
	Rejoice as nearly 1,400 lines of code disappears!
	* include/vaucanson/automata/concept/automata_base.hh: .
	* include/vaucanson/automata/concept/automata_base.hxx: .
	* include/vaucanson/automata/concept/automata_ops.hh: .
	* include/vaucanson/automata/concept/automata_ops.hxx: .
	* include/vaucanson/automata/concept/kinds.hh: Also add back missing brace
	  removed in r2313.
	* include/vaucanson/automata/concept/kinds.hxx: Also add back missing brace
	  removed in r2313.
	* include/vaucanson/automata/implementation/automaton_view.hh: .
	* include/vaucanson/automata/implementation/automaton_view.hxx: .
	* include/vaucanson/automata/implementation/bmig_graph_impl.hh: .
	* include/vaucanson/automata/implementation/bmig_graph_impl.hxx: .
	* include/vaucanson/automata/implementation/listg_graph_impl.hh: .
	* include/vaucanson/automata/implementation/listg_graph_impl.hxx: .
	* include/vaucanson/automata/implementation/transpose_view.hh: .
	* include/vaucanson/automata/implementation/transpose_view.hxx: .
	* src/tests/include/tests/automata/implementation_check/rdelta_test.hh: .

	* include/vaucanson/algorithms/internal/build_pattern.hxx:
	  "an other" -> "another".

	* lib/generate_libvcsn.rb: Make `pair_to_fmp' a pair automaton only
	  algorithm.
	* vaucanswig/expand.sh: Ignore `pair_to_fmp'.

	* include/vaucanson/algebra/implementation/monoid/pair_str_words.hh
	  (op_first, op_second, op_in_mirror, op_length): Remove `algebra'
	  namespace qualifier.
	  (op_rout): Rename the first template argument from `Self' to `F',
	  add the template argument `S' and remove the template argument
	  `T'. Remove `algebra' namespace qualifier. Use `FreeMonoidProduct'
	  and explicit word type. Cosmetic changes.
	* include/vaucanson/algebra/implementation/monoid/pair_str_words.hxx:
	  Cosmetic changes.
	  (op_rout): Update signature according to the header file. Use
	  monoid representation tokens (open_par, sep, close_par).

	* include/vaucanson/algebra/concept/freemonoid_product.hh: Add
	  predeclaration of `FreeMonoidProduct'. Add specialization of
	  `monoid_rep' for the `FreeMonoidProduct' concept. Add constructor
	  to explicitly give the monoid representation. Add new attribute
	  and accessor `rep_'. Cosmetic changes.
	* include/vaucanson/algebra/concept/freemonoid_product.hxx: Add
	  initialization of the `rep_' attribute to all constructors. Add
	  implementation of the new constructor. Cosmetic changes.

	* include/vaucanson/algebra/concept/freemonoid_product_base.hh,
	* include/vaucanson/algebra/concept/freemonoid_product_base.hxx:
	  Here.

	* include/vaucanson/algebra/implementation/monoid/str_words.hh
	  (op_rout): Change signature by adding the `const' qualifier to the
	  thirs argument.
	* include/vaucanson/algebra/implementation/monoid/str_words.hxx
	  (op_rout): Update third argument. Remove parenthesis after the
	  `empty' attribute.

	* src/tests/include/Makefile.am: Add new file to the distribution.
	* src/tests/include/tests/automata/algos/README: Add a short
	  description of the new pair_automata folder.
	* src/tests/include/tests/automata/algos/pair_automata/pair_to_fmp_test.hh: New.
	* src/tests/test-suites/char_char_boolean_automaton.defs: New.
	* src/tests/test-suites/context_headers_char_char_boolean.defs: New.
	* src/tests/test-suites/context_headers_int_int_boolean.defs: New.
	* src/tests/test-suites/generate-all.sh: Generate tests for
	  `char_char_boolean_automaton' and `int_int_boolean_automaton'.
	* src/tests/test-suites/int_int_boolean_automaton.defs: New.
	* src/tests/test-suites/subdirs.mk: Update according to the new
	  tests.

	* include/vaucanson/misc/random.hh (generate): New macro
	  `DECLARE_PAIR_SPECIALIZATION' to declare three more specialization
	  for std::pair (std::pair<char,char>, std::pair<int,int> and
	  std::pair<int,char>).
	* include/vaucanson/misc/random.hxx (generate): New macro
	  `MAKE_PAIR_SPECIALIZATION' to make three more specialization for
	  std::pair (std::pair<char,char>, std::pair<int,int> and
	  std::pair<int,char>).

	* include/Makefile.am: Add new files to the distribution.
	* include/vaucanson/algorithms/pair_to_fmp.hh: New.
	* include/vaucanson/algorithms/pair_to_fmp.hxx: New.
	* doc/NEWS.txt: Update.

	* include/vaucanson/algorithms/ltl_to_pair.hh (mute_ltl_to_pair):
	  When calculating the `ret_impl_t', now explicitly specify the
	  implementation details required by `mute_graph_impl_monoid_traits'.
	* include/vaucanson/algorithms/ltl_to_pair.hxx: Cosmetic change.

	* include/vaucanson/automata/concept/automata_base.hh
	  (mute_graph_impl_monoid_traits): Rename the `M' template argument
	  to `W'. Add the `L' template argument. Remove calculation of the
	  letter type, as it must now be provided by the user. Replace
	  `monoid_elt_value_t' by `W'. Replace `letter_t' by `L'. The trait
	  now only deals with implementation details.

	* include/vaucanson/algebra/implementation/monoid/free_monoid.hh:
	  (representation): Add `const' qualifier.
	* include/vaucanson/algebra/implementation/monoid/free_monoid.hxx:
	  (CTORS): Reorder attributes initialization list.
	  (representation): Add `const' qualifier.

	* include/vaucanson/algebra/concept/freemonoid_base.hxx,
	* include/vaucanson/algebra/implementation/series/polynoms.hxx: Here.

	* include/vaucanson/automata/concept/automata_base.hh: Annotate
	  "states", "series" and "transitions" better, and add a pointer
	  to Trac #191. Fix some English.
	* include/vaucanson/automata/concept/automata_base.hxx: Improve
	  comments for "transitions" and "states" methods.
	* include/vaucanson/automata/concept/transducer_base.hh: Fix English.
	* include/vaucanson/misc/usual_macros.hh: Add a FIXME pointing to
	  Trac #190 [sic].

	* include/vaucanson/automata/concept/automata.hh: AutomataSet ->
	  AutomatonSet.

	* include/vaucanson/algebra/implementation/series/series.hh: .
	* include/vaucanson/automata/concept/automata.hh: .
	* include/vaucanson/automata/concept/transducer.hh: .

	* /include/vaucanson/automata/conceptautomata_base.hh: The
	  methods states and transitions were marked as "const
	  versions" but they don't return a const type. Remove this
	  note on each method.

	* /include/vaucanson/automata/conceptautomata_base.hh: "states"
	  should be "transitions".

	Replace the list of exhaustive files by vaucanson_*_hh.cc

	* /home/rrt/vaucanson/trunk/include/vaucanson/design_pattern/element.hh:
	  theorical -> theoretical.

	The type semigroup_kind is defined for each semiring, but
	never used. The code is old, so if it hasn't been used for
	so long, it might as well be removed. (It's just another
	trap for the unwary, otherwise.)
	* include/vaucanson/algebra/concept/freemonoid_product.hh.
	* include/vaucanson/algebra/concept/numerical_semiring.hh.
	* include/vaucanson/algebra/concept/semigroup_base.hh.
	* include/vaucanson/algebra/concept/tropical_semiring.hh.
	* include/vaucanson/algebra/implementation/monoid/free_monoid.hh.
	* include/vaucanson/algebra/implementation/series/series.hh.

	Latteux is an iterative ORR program that obviously shares
	a history with the rest of the code in this directory.
	It should be more integrated, and it's not at all obvious
	that it works properly, but for the moment, I have just
	added it to the directory and made sure that it compiles,
	and at least runs. In future it should be tested thoroughly,
	debugged, and merged in with the rest of the code (at the
	moment there's a lot of code in ORR_iterate.cc that appears
	in other files in this directory).
	* src/demos/one_rule_rewriting/Makefile.am: Add ORR_iterate.
	* src/demos/one_rule_rewriting/ORR_iterate.cc: New.
	* src/demos/one_rule_rewriting/shortest.hh: New.

	* src/demos/one_rule_rewriting/ORR_demo.cc: Use "L" and "R"
	  rather than "G" and "D" in name labels.

	* data/template_graph_impl.hh: Fix some English.

	This labels kind is defunct, and used nowhere, and not part of
	the new scheme of things.
	* include/vaucanson/automata/concept/kinds.hh.
	* include/vaucanson/automata/concept/kinds.hxx.

	* include/vaucanson/algorithms/realtime.hh: Fix English.

	* include/vaucanson/algebra/concept/series_base.hxx,
	* include/vaucanson/algebra/concept/freemonoid_base.hxx: add missing
	  braces.
	* include/vaucanson/algebra/implementation/monoid/monoid_rep.hxx:
	  add missing double quote.
	* include/vaucanson/algebra/implementation/series/krat.hh: add
	  missing references.
	* include/vaucanson/algebra/implementation/series/krat.hxx: use the
	  accessor to the representation.
	* include/vaucanson/algebra/implementation/series/polynoms.hxx:
	  remove braces.

	* include/vaucanson/contexts/automaton_maker.thh,
	* include/vaucanson/contexts/automaton_maker.thxx: 
	  Remove the old token representation system from automaton_maker.

	* include/vaucanson/algebra/concept/freemonoid_base.hxx: 
	  Add op_rout dispatch.
	* include/vaucanson/algebra/implementation/monoid/str_words.hh,
	* include/vaucanson/algebra/implementation/monoid/str_words.hxx:
	  Add specialization of op_rout function on str_words.

	* lib/krat_exp/krat_exp_bison.yy: Remove the token ONE from the
	  grammar.
	* include/vaucanson/algebra/implementation/series/krat_exp_parser.hh,
	* include/vaucanson/algebra/implementation/series/krat_exp_parser.hxx:
	  Remove everything related with the ONE token and use the new
	  representation system.

	* include/vaucanson/algebra/concept/series_base.hh,
	* include/vaucanson/algebra/concept/series_base.hxx: Add op_rout
	  dispatch.
	* include/vaucanson/algebra/implementation/series/polynoms.hxx:
	  Add specialization of op_rout function on polynoms.
	* include/vaucanson/algebra/implementation/series/krat.hh,
	* include/vaucanson/algebra/implementation/series/krat.hxx,
	* include/vaucanson/algebra/implementation/series/rat/dump_visitor.hh,
	* include/vaucanson/algebra/implementation/series/rat/dump_visitor.hxx:
	  Add specialization of op_rout function on krat.

	* include/vaucanson/algebra/concept/letter.hh,
	* include/vaucanson/algebra/concept/letter.hxx,
	* include/vaucanson/algebra/implementation/letter/char_letter.hxx,
	* include/vaucanson/algebra/implementation/letter/couple_letter.hxx,
	* include/vaucanson/algebra/implementation/letter/int_letter.hxx:
	  Remove LETTER_DEFAULT and COUPLE_LETTER_DEFAULT macros and the
	  token_representation structure.

	* include/vaucanson/algebra/implementation/series/series.hh,
	* include/vaucanson/algebra/implementation/series/series.hxx: Add an
	  attribut to keep the series representation, fix the existing
	  constructor to work with the default representation and add a new
	  constructor to specify a representation.

	* src/tests/test-suites/algebra_alphabet_set_alpha.defs,
	* src/tests/test-suites/algebra_alphabet_set_char.defs,
	* src/tests/test-suites/algebra_alphabet_set_int.defs,
	* src/tests/test-suites/algebra_free_monoid_product_string.defs,
	* src/tests/test-suites/algebra_free_monoid_string.defs,
	* src/tests/test-suites/algebra_series_krat_bool_string.defs,
	* src/tests/test-suites/algebra_series_krat_cderivation.defs,
	* src/tests/test-suites/algebra_series_krat_derivation.defs,
	* src/tests/test-suites/algebra_series_krat_double_string.defs,
	* src/tests/test-suites/algebra_series_krat_int_string.defs,
	* src/tests/test-suites/algebra_series_krat_partial_derivation.defs,
	* src/tests/test-suites/algebra_series_polynom_bool_string.defs,
	* src/tests/test-suites/algebra_series_polynom_double_string.defs,
	* src/tests/test-suites/algebra_series_polynom_int_string.defs:
	  Remove inclusion of `predefs'. Add some type helpers.

	* include/vaucanson/algebra/implementation/monoid/free_monoid.hh,
	* include/vaucanson/algebra/implementation/monoid/free_monoid.hxx:
	  Add an attribut to keep the monoid representation, fix the
	  existing constructor to work with the default representation and
	  add a new constructor to specify the representation.
	* include/vaucanson/algebra/implementation/free_monoid: Remove.
	* include/vaucanson/algebra/implementation/free_monoid_product: Remove.