2008-05-22  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/tr1_impl/hashtable_policy.h (_Map_base<,,
	std::_Select1st<_Pair>, true,>::at): Add per DR 761. 
	* testsuite/23_containers/unordered_map/dr761.cc: New.
	* doc/xml/manual/intro.xml: Add an entry for DR 761.

From-SVN: r135787