mt_allocator.h (__mt_alloc<>::allocate): Factor out some duplicated code.

2004-04-03  Paolo Carlini  <pcarlini@suse.de>

	* include/ext/mt_allocator.h (__mt_alloc<>::allocate): Factor out
	some duplicated code.
	(__mt_alloc<>::_Bin_record): Spare the space of _M_free and _M_used
	in the single threaded case.
	* testsuite/performance/20_util/allocator/list_sort_search.cc:
	Reorder and renumber the tests consistently with the other testfiles.
	* testsuite/performance/20_util/allocator/map_mt_find.cc: Ditto.
	* testsuite/performance/20_util/allocator/map_thread.cc: Ditto.
	* testsuite/performance/20_util/allocator/producer_consumer.cc: Ditto.

From-SVN: r80375