Make extraction of option's value more conventional.

	* src/task/task_register.cc: Split argv[] on `=' for long options'
	values only. Split argv[] in place for short options' value. Use
	the next argv[] when no value is provided.

	* bootstrap: Update.
	Support the new access to the repository of Gnulib.
	* gnulib.modules: New file.

	* config: Remove empty directory.

	* vcs/nolimips.rb: New.

	Control coprocessor has the system library

	* src/vm/cp0.hh, src/vm/cp0.hxx:
	(set_system_library) New.
	(raise_syscall) Invoke system library if any.
	* src/vm/cpu.hh, src/vm/cpu.hxx:
	(set_system_library) Remove.
	* src/vm/cpu.cc:
	(syscall) Raise a syscall exception through cp0.
	* src/vm/virtual_machine.hh, src/vm/virtual_machine.hxx:
	(get_cp0) New non-const accessor.
	(set_system_library) Remove.
	* src/vm-tasks.cc:
	Access cp0 to set system library.

	Do not call exit_set inside control coprocessor

	* src/vm/cp0.hh, src/vm/cp0.hxx:
	(get_register) New.
	(raise_overflow, raise_addr_load, raise_addr_store): Activate
	fatal_exception_, remove call to exit_set.
	* src/vm/virtual_machine.cc:
	(execute) Use exit_set to report internal exception.

	Remove dirty access to libparse internal

	* src/inst/program_solver.gen.py, src/inst/program_solver.hxx:
	Replace dirty access to libparse internal by an internal flag.
	* src/inst-tasks.cc:
	Use it.
	

	Move inline implementations from .hh files to .hxx

	* src/inst/register.hh,
	* src/inst/label.hh,
	* src/inst/text_label.hh,
	* src/inst/exp.hh,
	* src/inst/int_exp.hh,
	* src/inst/label_exp.hh,
	* src/inst/op_exp.hh,
	* src/inst/inst.hh,
	* src/inst/section.hh,
	* src/inst/data_section.hh,
	* src/inst/text_section.hh,
	* src/inst/program.hh,
	* src/inst/program_builder.hh.gen.py,
	* src/inst/program_solver.gen.py,
	* src/vm/cp0.hh,
	* src/vm/cpu.hh,
	* src/vm/mmu.hh,
	* src/vm/memory.hh,
	* src/vm/segment.hh,
	* src/vm/system_library.hh,
	* src/vm/spim_system_library.hh,
	* src/vm/nolimips_system_library.hh,
	* src/vm/virtual_machine.hh,
	* src/shell/cmd.hh,
	* src/shell/shell.hh,
	* src/task/task.hh,
	* src/task/task_register.hh:
	Split into...
	* src/inst/register.hxx,
	* src/inst/label.hxx, src/inst/label.cc,
	* src/inst/text_label.hxx, src/inst/text_label.cc,	
	* src/inst/exp.hxx, src/inst/exp.cc,
	* src/inst/int_exp.hxx, src/inst/int_exp.cc,
	* src/inst/label_exp.hxx, src/inst/label_exp.cc,
	* src/inst/op_exp.hxx, src/inst/op_exp.cc,
	* src/inst/inst.hxx, src/inst/inst.cc,
	* src/inst/section.hxx, src/inst/section.cc,	
	* src/inst/data_section.hxx, src/inst/data_section.cc,
	* src/inst/text_section.hxx, src/inst/text_section.cc,
	* src/inst/program.hxx,
	* src/inst/program_builder.hxx,
	* src/inst/program_solver.hxx,
	* src/vm/cp0.hxx,
	* src/vm/cpu.hxx, src/vm/cpu.cc,
	* src/vm/mmu.hxx,
	* src/vm/memory.hxx,
	* src/vm/segment.hxx,
	* src/vm/system_library.hxx, src/vm/system_library.cc,
	* src/vm/spim_system_library.hxx, src/vm/spim_system_library.cc,
	* src/vm/nolimips_system_library.hxx, src/vm/nolimips_system_library.cc,
	* src/vm/virtual_machine.hxx, src/vm/virtual_machine.cc,
	* src/shell/cmd.hxx,
	* src/shell/shell.hxx, src/shell/shell.cc,
	* src/task/task.hxx, src/task/task.cc,
	* src/task/task_register.hxx, src/task/task_register.cc:
	... These files, respectively.
	* src/inst/Makefile.am,
	* src/shell/Makefile.am,
	* src/task/Makefile.am,
	* src/vm/Makefile.am:
	Update accordingly.

	* src/inst/exp-visitor.hh:
	Use fwd.hh
	* src/task-tasks.cc, src/nolimips-tasks.cc:
	Include task_register.hh
	* src/task/boolean_task.hh,
	* src/task/function_task.hh,
	* src/task/int_task.hh,
	* src/task/string_task.hh:
	Homogeneize coding style.

	Print a generated-file warning at the beginning of generated
	files.
	Suggested by Roland Levillain.

	* dev/nolimips.py (generated_by_hand): Add warning string.
	* src/parse/asm-parse.yy.gen.py,
	* src/parse/asm-scan.ll.gen.py,
	* src/inst/program_solver.gen.py,
	* src/inst/nodes.gen.py,
	* src/inst/program_builder.hh.gen.py,
	Print warning right after license.
	* src/inst/nodes.mk.gen.py: Remove a useless import.

	Add forward declarations files

	* src/inst/nodes.gen.py: Generate forward declarations in an
	fwd.hh file instead of decl.hh
	* src/inst/nodes.mk.gen.py: Update accordingly.
	* src/parse/fwd.hh: New.
	* src/parse/Makefile.am: Distribute.
	* src/vm/fwd.hh: New.
	* src/vm/Makefile.am: Distribute.

	Prepare for Bison 2.2.

	* src/parse/asm-parse.yy.gen.py: Require Bison 2.1a.
	Use the LALR(1) C++ skeleton.
	* asm-scan.ll.gen.py: Update the the scanner to use tokens from
	yy::parser::token.
	* src/parse/asm-scan.hh (yylex): Adjust the types of the
	arguments.
	* src/parse/libparse.cc: Include parse/asm-scan.hh.
	* build-aux/bison++.in: Remove Bison 2.0 support.

	print is still a python keyword

	* src/misc/table.hh,
	* src/inst/register.hh,
	* src/inst/exp.hh, src/inst/exp.cc,
	* src/inst/op_exp.hh, src/inst/op_exp.cc,
	* src/inst/label_exp.hh, src/inst/label_exp.cc,
	* src/inst/section.hh,
	* src/inst/data_section.hh, src/inst/data_section.cc,
	* src/inst/text_section.hh, src/inst/text_section.cc,
	* src/inst/program.hh,
	* src/vm/cpu.hh, src/vm/cpu.cc,
	* src/vm/virtual_machine.hh:
	(print) Rename as...
	(write).

	print is a python keyword

	* src/inst/inst.hh, src/inst/nodes.gen.py:
	(print) Rename as...
	(write).

	Use libtool to pack librairies
	
	* configure.ac: Check for libtool's presence.
	
	* src/vm/Makefile.am,
	* src/misc/Makefile.am,
	* src/task/Makefile.am,
	* src/shell/Makefile.am,
	* src/parse/Makefile.am,
	* src/inst/Makefile.am,
	* src/Makefile.am:
	Generate libtool libraries.
	

	Fix nolimips' system library's read implementation.

	* src/vm/nolimips_system_library.cc:
	(NolimipsSystemLibrary::read): Effectively return -1 on EOF.

	Rename config/ as build-aux/ to match with up-to-date coding
	standards.
	
	* config/Makefile.am, config/bison++.in,
	* config/move-if-change, config/readline.m4:
	Move to...
	* build-aux/Makefile.am, build-aux/bison++.in,
	* build-aux/move-if-change, build-aux/readline.m4:
	... here.
	* configure.ac, Makefile.am, src/parse/Makefile.am:
	Adjust accordingly.

	Update bison++.

	* configure.ac: Check for bison instead of yacc.
	(AC_CONFIG_FILES): Generate config/bison++.
	* config/bison++: Rename as...
	* config/bison++.in: ...this.
	Be robust to absolute srcdir paths.
	* config/Makefile.am (dist_noinst_SCRIPTS): Move bison++...
	(nodist_noinst_SCRIPTS): ...here (new variable).
	* src/parse/Makefile.am (BISONXX, BISONXX_IN): New.
	(BISONXX_IN): New rule.
	(EXTRA_DIST): Add $(srcdir)/asm-parse.yy.
	((srcdir)/bison++.stamp): Add $(srcdir)/asm-parse.yy as a
	dependency and ensure bison++ is up-to-date.
	(libparse_a_SOURCES): Remove asm-parse.yy.
	Add asm-parse.cc.

	Provide --system-library option.

	* src/task/string_task.hh, src/task/string_task.cc:
	New.
	* src/task/libtask.hh, src/task/Makefile.am:
	Distribute them.
	* src/vm-tasks.hh, src/vm-tasks.hh:
	(select_system_library): Implement builtin system library
	selection.
	* NEWS: Update.

	* src/vm/nolimips_system_library.cc: Provide a stub for free().
	

	Introduce nolimips system library.
	
	* src/vm/nolimips_system_library.hh,
	* src/vm/nolimips_system_library.hxx,
	* src/vm/nolimips_system_library.cc:
	Provide a set of some libc functions as syscalls.
	* src/vm/Makefile.am: Distribute these new files.
	* src/vm-tasks.cc: Fix missing include.
	

	Work around Mac OS X ar's inability to produce an empty library.

	* lib/dummy.cc: New file.
	* lib/Makefile.am (libnolimips_a_SOURCES): Add dummy.cc.

	Reduce includes' dependencies.
	
	* src/vm/cpu.hh, src/vm/cpu.cc
	* src/vm/virtual_machine.hh, src/vm/virtual_machine.cc
	* src/parse/asm-parse.yy.gen.py, src/parse/asm-scan.ll.gen.py,
	* src/inst/register.hh,
	* src/inst/op_exp.hh,
	* src/inst/label_exp.hh,
	* src/inst/exp.hh,
	* src/inst/section.hh, src/inst/data_section.hh,
	* src/inst/program.hh
	* src/inst/nodes.gen.py
	* src/inst/inst.hh
	* src/inst/label.hh:
	Remove unused includes, forward-declare classes.

	Introduce system libraries.

	* src/vm/cpu.hh, src/vm/cpu.cc:
	Export mmu and cp0. Move syscalls' implementation to...
	* src/vm/system_library.hh, src/vm/system_library.cc,
	* src/vm/spim_system_library.hh, src/vm/spim_system_library.hxx,
	* src/vm/spim_system_library.cc:
	These new files.
	* src/vm/cp0.hh: Export fatal_exception flag.
	* src/vm/Makefile.am: Update accordingly.
	* src/vm/virtual_machine.hh, src/vm/virtual_machine.cc:
	Propagate system library to cpu.
	* src/vm-tasks.cc: 
	Give a default system library to virtual machine.

	--argument-registers

	* src/inst-tasks.hh: Rename `args' option to `--argument-registers'.
	Suggested by Akim Demaille.

	Fix from-scratch build.
	
	* boostrap: Search for nodes.mk.gen.py in src/inst instead of
	dev/ (shame on me).

	Detect several definitions of the same label in a section.

	* src/inst/section.hh (register_label):
	Return false when label is already known in the section, true
	otherwise. Move implementation to...
	* src/inst/section.cc, src/inst/Makefile.am:
	This new file.
	* src/inst/data_section.hh, src/inst/data_section.cc,
	* src/inst/text_section.hh, src/inst/text_section.cc (define_label):
	Propagate status of register_label.
	* src/inst/program_builder.hh.gen.py:
	Generate an error when a label is defined more than once.
	* tests/solve/data-label-already-defined.s,
	* tests/solve/text-label-already-defined.s,
	* tests/solve/Makefile.am:
	Test it.

	* src/misc/unique_string.hh, src/misc/unique_string.cc: 
	Introduce a constructor from a const char*. Factor string
	insertion in pool.
	Suggested by Akim Demaille: Use a set of strings instead of a set
	of pointers as internal pool. Compose an iterator instead of a
	pointer.
	* src/parse/asm-scan.ll.gen.py: 
	Suggested by Akim Demaille: Don't be affraid to side-affect
	yytext.

	Shame on me.

	* src/misc/unique_string.hh: Fix error: static member function cannot 
	have const qualifier.

	Simplify unique_string construction.

	* src/misc/unique_string.hh, src/misc/unique_string.cc (create):
	Remove. Move its implementation to unique_string's constructor,
	hence make unique_string aggregate a pointer-to-string instead of a
	reference.
	* src/misc/test-unique_string.cc, src/vm/virtual_machine.cc, 
	* src/shell/shell.cc, src/parse/asm-parse.yy.gen.py,
	* src/parse/asm-scan.ll.gen.py, src/inst/label_exp.hh,
	* src/inst/section.hh, src/inst/label.hh:
	Adjust.

	* dev/nolimips.py, dev/nolimips.xml: Introduce predefined
	attributes to reduce data redundancy.

	* dev/nolimips.py, dev/nolimips.xml: Introduce predefined syntaxes
	to reduce data redundancy.

	Move generators to source directories.

	* dev/parse-asm-parse-gen.py, dev/parse-asm-scan-gen.py,
	* dev/inst-solver-gen.py, dev/inst-nodes-gen.py,
	* dev/inst-builder-gen.py, dev/inst-nodes-mk-gen.py,
	* dev/doc-inst-set-gen.py:
	Move to...
	* src/parse/asm-parse.yy.gen.py, src/parse/asm-scan.ll.gen.py,
	* src/inst/program_solver.gen.py, src/inst/nodes.gen.py,
	* src/inst/program_builder.hh.gen.py, src/inst/nodes.mk.gen.py,
	* doc/inst-set.texi.gen.py:
	These files (respectively).
	* src/parse/Makefile.am, src/inst/Makefile.am, doc/Makefile.am,
	* Makefile.am:
	Update accordingly.
	

	* configure.ac: Bump to 0.8a
	* NEWS: Fix release date.

	* configure.ac: Bump to 0.8.

	Limit access to argument registers.

	* dev/inst-solver-gen.py: Check use of argument registers.
	* src/inst-tasks.hh, src/inst-tasks.cc: Add corresponding task.

	* dec/parse-asm-scan-gen.py: Explicitely dispatch on signed
	integer when reading one from a string, by checking its first
	character (g++-3.4 considers converting "-1" into an "(unsigned&) i"
	as an error, whereas g++-3.3 did not).

	Remove size limitation of data sections.
	
	* src/inst/data_section.hh, src/inst/data_section.cc:
	Prefer std::vector to int* (shame on me).

	Introduce `lockable' facility.

	* src/misc/lockable.hh: New file.
	* src/misc/Makefile.am: Distribute it.
	* src/inst/text_label.hh, src/inst/exp.hh, src/inst/label.hh,
	* src/inst/int_exp.hh, src/inst/int_exp.cc:
	Use lockable.
	* dev/inst-solver-gen.py: Update accordingly.

	Split `exp' files.

	* src/inst/exp.hh, src/inst/exp.cc:
	Split into...
	* src/inst/label_exp.hh, src/inst/label_exp.cc,
	* src/inst/op_exp.hh, src/inst/op_exp.cc,
	* src/inst/int_exp.hh, src/inst/exp.hh:
	These files.
	* src/inst/Makefile.am:	Distribute them.
	* src/vm/cpu.cc, dev/inst-builder-gen.py, dev/inst-solver-gen.py:
	Update accordingly.