Add class __versa_string, a versatile "basic_string-type" class...

2005-07-05  Paolo Carlini  <pcarlini@suse.de>

	Add class __versa_string, a versatile "basic_string-type" class:
	an additional, non-standard, template parameter allows to specify
	the preferred base class. Two are provided: __rc_string_base,
	which implements a behavior very similar to our standard string,
	and __sso_string_base, not reference-counted and optimized for
	short strings.
	* include/ext/rc_string_base.h: New.
	* include/ext/sso_string_base.h: Likewise.
	* include/ext/vstring.h: Likewise.
	* include/ext/vstring.tcc: Likewise.
	* include/ext/vstring_fwd.h: Likewise.
	* include/ext/vstring_util.h: Likewise.
	* include/Makefile.am: Add.
	* include/Makefile.in: Regenerate.
	* testsuite/ext/vstring/explicit_instantiation/1.cc: New.
	* testsuite/ext/vstring/explicit_instantiation/2.cc: Likewise.
	* testsuite/ext/vstring/explicit_instantiation/char/1.cc: Likewise.
	* testsuite/ext/vstring/explicit_instantiation/wchar_t/1.cc: Likewise.

	* Makefile.in: Regenerate with autotools 1.9.3 (to date, the version
	officially used by v3).
	* aclocal.m4: Likewise.
	* libmath/Makefile.in: Likewise.
	* libsupc++/Makefile.in: Likewise.
	* po/Makefile.in: Likewise.
	* src/Makefile.in: Likewise.
	* testsuite/Makefile.in: Likewise.

From-SVN: r101639