functional (_Derives_from_unary_function): Remove.

functional (_Derives_from_unary_function): Remove.

2013-04-04  François Dumont  <fdumont@gcc.gnu.org>

	* include/std/functional (_Derives_from_unary_function): Remove.
	(_Derives_from_binary_function): Remove.
	* include/std/type_traits (__sfinae_types): Remove.
	(__is_assignable_helper): Adapt.
	(__is_convertible_helper): Adapt.
	(_GLIBCXX_HAS_NESTED_TYPE): Adapt.
	Remove several explicit instantiations of integral_constant.
	* testsuite/20_util/reference_wrapper/typedefs-3.cc: Adapt.
	* testsuite/20_util/make_signed/requirements/typedefs_neg.cc:
	Adapt dg-error line number.
	* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc:
	Likewise.
	* testsuite/20_util/declval/requirements/1_neg.cc: Likewise.
	* testsuite/20_util/bind/ref_neg.cc: Likewise.

From-SVN: r197551