* include/bits/cpp_type_traits.h
	(__gnu_cxx::__is_normal_iterator): Delete.
	* include/bits/stl_algobase.h (std::__niter_base): Adapt.
	* include/bits/stl_iterator.h (__make_reverse_iterator): New in C++11.
	(std::__niter_base): Overloads for std::reverse_iterator,
	__gnu_cxx::__normal_iterator and std::move_iterator.

From-SVN: r222617