2001-10-31  Benjamin Kosnik  <bkoz@redhat.com>

	libstdc++/4749
	* include/bits/codecvt.h: Add virtual member function declarations.
	* src/codecvt.cc: Tweaks.
	* testsuite/22_locale/codecvt.cc: Test compilation only,
	non-required facets not required to have linkage.

From-SVN: r46685