re PR libstdc++/24803 ([c++0x] reference_wrapper and pointers to member functions)

re PR libstdc++/24803 ([c++0x] reference_wrapper and pointers to member functions)

	PR libstdc++/24803
	PR libstdc++/37351
	* include/tr1_impl/functional (result_of,reference_wrapper): Update
	to use C++0x features.
	* testsuite/20_util/function_objects/return_types/result_of.cc: New.
	* testsuite/20_util/function_objects/return_types/result_of_neg.cc:
	New.
	* testsuite/20_util/function_objects/return_types/result_of_ref.cc:
	New.
	* testsuite/20_util/reference_wrapper/24803.cc: Uncomment FIXMEs.

From-SVN: r141596