2010-10-06  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/std/functional (struct _Weak_result_type_impl): Add
	specializazions for cv-qualified function types, for variadic
	function types and pointers and references to function types,
	and for pointers to member function types.
	(struct _Reference_wrapper_base): Add specializations for
	cv-qualified unary and binary function types.
	* testsuite/20_util/reference_wrapper/result_type.cc: New.
	* testsuite/20_util/reference_wrapper/typedefs-2.cc: Likewise.

From-SVN: r165056