2011-12-09  François Dumont <fdumont@gcc.gnu.org>

	* include/bits/hashtable.h (_Hashtable<>::emplace,
	_Hashtable<>::emplace_hint): Add.
	* include/debug/unordered_set (unordered_set<>::emplace,
	unordered_set<>::emplace_hint, unordered_multiset<>::emplace,
	unordered_multiset<>::emplace_hint): Add.
	* include/profile/unordered_set: Likewise.
	* include/debug/unordered_map (unordered_map<>::emplace,
	unordered_map<>::emplace_hint, unordered_multimap<>::emplace,
	unordered_multimap<>::emplace_hint): Add.
	* include/profile/unordered_map: Likewise.
	* testsuite/23_containers/unordered_map/modifiers/emplace.cc: New.
	* testsuite/23_containers/unordered_multimap/modifiers/emplace.cc:
	New.
	* testsuite/23_containers/unordered_set/modifiers/emplace.cc: New.
	* testsuite/23_containers/unordered_multiset/modifiers/emplace.cc:
	New.
	* testsuite/util/testsuite_container_traits.h
	(traits_base::has_emplace): Add and defined as std::true_type for
	unordered containers.
	* testsuite/util/exception/safety.h (emplace, emplace_hint): Add and
	use them in basic_safety exception test case.
	* doc/xml/manual/status_cxx2011.xml: Update unordered containers
	status.

From-SVN: r182174