codecvt.h: New file.

codecvt.h: New file.

2000-08-15  Benjamin Kosnik  <bkoz@purist.soma.redhat.com>

	* bits/codecvt.h: New file.
	* src/codecvt.cc: New file.
	* bits/std_locale.h: Add include here.
	* src/Makefile.am (headers): Add codecvt.h
	(sources): Add codecvt.cc.
	* src/Makefile.in: Regenerate.
	* bits/locale_facets.h (codecvt): Re-implement. Rename _Codecvt to
	__codecvt_abstract_base in an attempt to point some light this way...
	Move __enc_traits and codecvt bits to codecvt.h.
	* src/locale-inst.cc: Remove codecvt<wchar_t, wchar_t, mbstate_t>
	explicit instantiation. Separate out codecvt instantations, simplify.
	* src/locale.cc: Move codecvt bits to codecvt.cc

From-SVN: r35738