2011-05-19  Daniel Krugler  <daniel.kruegler@googlemail.com>

	* testsuite/util/testsuite_tr1.h: Add test classes.
	* testsuite/20_util/is_nothrow_assignable/value.cc: Add.

2011-05-19  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/std/type_traits (is_assignable, is_copy_assignable,
	is_move_assignable, is_nothrow_assignable, is_nothrow_copy_assignable,
	is_nothrow_move_assignable): Add; minor tweaks elsewhere.
	(has_nothrow_copy_assign): Remove.
	* testsuite/util/testsuite_tr1.h: Add test classes.
	* testsuite/20_util/is_assignable/requirements/typedefs.cc: Add.
	* testsuite/20_util/is_assignable/requirements/
	explicit_instantiation.cc: Likewise.
	* testsuite/20_util/is_nothrow_assignable/value.cc: Likewise.
	* testsuite/20_util/is_nothrow_assignable/requirements/typedefs.cc:
	Likewise.
	* testsuite/20_util/is_nothrow_assignable/requirements/
	explicit_instantiation.cc: Likewise.
	* testsuite/20_util/is_move_assignable/value.cc: Likewise.
	* testsuite/20_util/is_move_assignable/requirements/typedefs.cc:
	Likewise.
	* testsuite/20_util/is_move_assignable/requirements/
	explicit_instantiation.cc: Likewise.
	* testsuite/20_util/is_copy_assignable/value.cc: Likewise.
	* testsuite/20_util/is_copy_assignable/requirements/typedefs.cc:
	Likewise.
	* testsuite/20_util/is_copy_assignable/requirements/
	explicit_instantiation.cc: Likewise.
	* testsuite/20_util/is_nothrow_move_assignable/value.cc: Likewise.
	* testsuite/20_util/is_nothrow_move_assignable/requirements/
	typedefs.cc: Likewise.
	* testsuite/20_util/is_nothrow_move_assignable/requirements/
	explicit_instantiation.cc: Likewise.
	* testsuite/20_util/is_nothrow_copy_assignable/value.cc: Likewise.
	* testsuite/20_util/is_nothrow_copy_assignable/requirements/
	typedefs.cc: Likewise.
	* testsuite/20_util/is_nothrow_copy_assignable/requirements/
	explicit_instantiation.cc: Likewise.
	* testsuite/20_util/make_signed/requirements/typedefs_neg.cc: Adjust
	dg-error line numbers.
	* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc:
	Likewise.
	* testsuite/20_util/declval/requirements/1_neg.cc: Likewise.

From-SVN: r173899