locale_facets.tcc (locale::combine): Clone _Impl.

locale_facets.tcc (locale::combine): Clone _Impl.

2001-06-29  Benjamin Kosnik  <bkoz@redhat.com>

	* include/bits/locale_facets.tcc (locale::combine): Clone _Impl.
	before replacing facet.
	* include/bits/localefwd.h (locale::_Impl::_M_remove_reference):
	Correct decrement.
	* src/localename.cc (locale::_Impl): Correct ctor initialization
	lists. Initialize ref count with one. Simplify.
	* src/locale.cc: Add comment.
	* testsuite/22_locale/numpunct.cc (test01): Add derivation test.
	* testsuite/22_locale/numpunct_char_members.cc (test01): Add tests.
	* testsuite/22_locale/members.cc (test02): Fix.

From-SVN: r43661