Implement std::collate.

Implement std::collate.

2001-08-17  Benjamin Kosnik  <bkoz@redhat.com>

	Implement std::collate.
	* config/locale/collate_specializations_gnu.cc: Add here, implement in
	MT-safe way.
	* config/locale/collate_specializations_generic.cc: Add here, but
	in a less sophisticated manner.
	* include/bits/locale_facets.tcc (collate): Add generic definition.
	* include/bits/locale_facets.h (~collate): Mark virtual.
	(collate::_M_compare_helper): New.
	(collate::_M_transform_helper): New.
	* src/locale.cc: Remove unnecessary specializations.
	* src/string-inst.cc: Tweak instantiation of ctors.

	* acinclude.m4 (GLIBCPP_ENABLE_CLOCALE): Do configury for collate.
	* aclocal.m4: Regenerate.
	* configure: Regenerate.
	* src/Makefile.am (sources): Add collate.cc.
	* src/Makefile.in: Regenerate.

	* testsuite/22_locale/collate_byname.cc: New.
	* testsuite/22_locale/collate.cc: New file.
	* testsuite/22_locale/collate_char_members.cc: New file.
	* testsuite/22_locale/collate_wchar_t_members.cc: New file.

From-SVN: r44996