* include/vaucanson/misc/timer.cc,
	* include/vaucanson/misc/timer.hxx,
	* include/vaucanson/misc/timer.hh: Add new operations designed
	  to be used by Bencher.

	* include/vaucanson/misc/bencher.hh,
	* include/vaucanson/misc/bencher.cc,
	* include/vaucanson/misc/bencher.hxx: New. The Bencher
	  class. Use Timer to collect measures on a programm
	  execution.

	* taf-kit/src/common.hh: .
	* taf-kit/src/main.cc: .

	* include/Makefile.am: Update accordingly.