type_traits (_DEFINE_SPEC*): Simplify.

type_traits (_DEFINE_SPEC*): Simplify.

2008-08-10  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/tr1_impl/type_traits (_DEFINE_SPEC*): Simplify.
	(_DEFINE_SPEC_BODY): Remove.
	(__is_void_helper, __is_integral_helper, __is_floating_point_helper,
	__is_member_object_pointer_helper, __is_member_function_pointer_helper,
	__remove_pointer_helper): Add.
	(is_void, is_integral, is_floating_point, is_member_object_pointer,
	is_member_function_pointer, remove_pointer): Use the latter.
	* include/tr1/type_traits (_DEFINE_SPEC): Simplify.
	(_DEFINE_SPEC_HELPER): Remove.
	(__is_signed_helper, __is_unsigned_helper): Add.
	(is_signed, is_unsigned): Use the latter.

From-SVN: r138925