2005-01-26	Douglas Gregor <doug.gregor@gmail.com>

	* include/tr1/functional (function): New class template.
	(mem_fn): New function template.
	Implementations of TR1 function and mem_fn facilities.
	* include/tr1/functional_iterate.h: Implementations of TR1
	function and mem_fn facilities. 
	* testsuite/tr1/3_function_objects/polymorphic_wrapper.cc: New
	test of std::tr1::function.
	* testsuite/tr1/3_function_objects/mem_fn.cc: New test of
	std::tr1::mem_fn.