2010-10-28  Paolo Carlini  <paolo.carlini@oracle.com>

	PR libstdc++/44436 (partial)
	* include/bits/hashtable.h (_Hashtable<>::insert(value_type&&),
	insert(_Pair&&), insert(const_iterator, value_type&&),
	insert(const_iterator, _Pair&&)): Add.
	(_M_allocate_node, _M_insert, _M_insert_bucket): Templatize.
	* include/bits/hashtable_policy.h (__detail::_Select1st): Add; use
	it throughout.
	(_Map_base<>::operator[](_Key&&)): Add.
	* include/bits/unordered_map.h: Use __detail::_Select1st throughout.
	* include/debug/unordered_map: Update.
	* include/debug/unordered_set: Likewise.
	* include/profile/unordered_map: Likewise.
	* include/profile/unordered_set: Likewise.
	* testsuite/util/testsuite_rvalref.h (struct hash<rvalstruct>): Add;
	minor tweaks throughout, use deleted special members.
	* testsuite/23_containers/unordered_map/insert/map_single_move-1.cc:
	New.
	* testsuite/23_containers/unordered_map/insert/map_single_move-2.cc:
	Likewise.
	* testsuite/23_containers/unordered_map/insert/array_syntax_move.cc:
	Likewise.
	* testsuite/23_containers/unordered_multimap/insert/
	multimap_single_move-1.cc: Likewise.
	* testsuite/23_containers/unordered_multimap/insert/
	multimap_single_move-2.cc: Likewise.
	* testsuite/23_containers/unordered_set/insert/set_single_move.cc:
	Likewise.
	* testsuite/23_containers/unordered_multiset/insert/
	multiset_single_move.cc: Likewise.

	* testsuite/23_containers/unordered_map/insert/array_syntax.cc:
	Minor cosmetic changes.
