strstream: Remove namespace std.

2002-07-01  Benjamin Kosnik  <bkoz@redhat.com>

	* include/backward/strstream: Remove namespace std. Transfer to...
	* include/backward/strstream.h: ...here. Qualify std names.
	* src/strstream.cc: Remove namespace std.
	* include/Makefile.am (backward_headers): Remove strstream.h.
	* include/Makefile.in: Regenerate.
	* config/linker-map.gnu: Export strstream bits.

	* src/fstream-inst.cc: Tweak.
	* src/io-inst.cc: Same.
	* src/istream-inst.cc: Same.
	* src/misc-inst.cc: Same.
	* src/ostream-inst.cc: Same.
	* src/sstream-inst.cc: Same.
	* src/valarray-inst.cc: Same.
	* src/misc-inst.cc: Remove unused instantiations.

From-SVN: r55148