type_traits: (make_signed, make_unsigned): Adjust for enum sizes.

type_traits: (make_signed, make_unsigned): Adjust for enum sizes.

2007-05-07  Benjamin Kosnik  <bkoz@redhat.com>
            Howard Hinnant  <hhinnant@apple.com>

	* include/std/type_traits: (make_signed, make_unsigned): Adjust
	for enum sizes.
	* testsuite/20_util/make_unsigned/requirements/typedefs.cc: Move to...
	* testsuite/20_util/make_unsigned/requirements/typedefs-1.cc: ...here.
	* testsuite/20_util/make_unsigned/requirements/typedefs-2.cc: Add,
	compile with -funsigned-char -fshort-enums.
	* testsuite/20_util/make_signed/requirements/typedefs.cc: Move to...
	* testsuite/20_util/make_signed/requirements/typedefs-1.cc: ...here.
	* testsuite/20_util/make_signed/requirements/typedefs-2.cc: Add,
	compile with -funsigned-char -fshort-enums.

	* testsuite/20_util/headers/type_traits/types_std_c++0x_neg.cc:
	Add a temporary xfail to this test for all platforms.

Co-Authored-By: Howard Hinnant <hhinnant@apple.com>
From-SVN: r124500