* include/vaucanson/misc/global_timer.hh: New, extracted and
	extended from...
	* include/vaucanson/misc/usual_macros.hh: here.
	Include it.
	* include/Makefile.am: Adjust.
	* include/vaucanson/misc/bencher.hh: Make most methods const.
	(BENCH_START, BENCH_STOP, BENCH_PRINT, BENCH_PLOT): Remove,
	replaced by macros in global_timer.hh.
	Also include bencher.cc for Vaucanson.
	* include/vaucanson/misc/bencher.hxx: Move most methods to...
	* include/vaucanson/misc/bencher.cc: here.
	Spread the missing consts.
	(print): Return the stream.
	(operator<< (ostream, Bencher)): New.

	* include/vaucanson/misc/timer.hh: Also include the cc file.
	* include/vaucanson/misc/timer.hxx: Don't.

	* taf-kit/src/common.hh: Adjust to these changes.
	* taf-kit/src/main.cc: Have a single main loop.
	Make sure the default number of iterations is 1.


	* taf-kit/tests/Makefile.am (XFAIL_TESTS): Add completeness.test.