2009-08-14  Edward Smith-Rowland  <3dw4rd@verizon.net>

	* include/bits/stl_tree.h: Make erase return iterator as per DR 130.
	* include/bits/stl_set.h: Same.
	* include/bits/stl_multiset.h: Same.
	* include/bits/stl_map.h: Same.
	* include/bits/stl_multimap.h: Same.
	* doc/xml/manual/intro.xml: Document.
	* testsuite/23_containers/set/dr130.cc: New.
	* testsuite/23_containers/multiset/dr130.cc: New.
	* testsuite/23_containers/map/dr130.cc: New.
	* testsuite/23_containers/multimap/dr130.cc: New.

From-SVN: r150768