* builtin-attrs.def (ATTR_NONNULL_3): New.
	(DEF_FORMAT_ATTRIBUTE): Use just ATTR_NONNULL_##FA instead of
	ATTR_NOTHROW_NONNULL_##FA.
	(DEF_FORMAT_ATTRIBUTE_NOTHROW, DEF_FORMAT_ATTRIBUTE_BOTH): New macros.
	(ATTR_FORMAT_PRINTF_NOTHROW_2_0, ATTR_PRINTF_NOTHROW_2_3,
	ATTR_FORMAT_PRINTF_NOTHROW_3_0, ATTR_FORMAT_PRINTF_NOTHROW_3_4,
	ATTR_FORMAT_PRINTF_NOTHROW_4_0, ATTR_PRINTF_NOTHROW_4_5,
	ATTR_FORMAT_PRINTF_NOTHROW_5_0, ATTR_FORMAT_PRINTF_NOTHROW_5_6,
	ATTR_FORMAT_SCANF_NOTHROW_2_0, ATTR_FORMAT_SCANF_NOTHROW_2_3,
	ATTR_FORMAT_STRFTIME_NOTHROW_3_0, ATTR_FORMAT_STRFMON_NOTHROW_3_4):
	New.
	(ATTR_FORMAT_PRINTF_4_0, ATTR_PRINTF_4_5, ATTR_FORMAT_PRINTF_5_0,
	ATTR_FORMAT_PRINTF_5_6, ATTR_FORMAT_STRFTIME_3_0,
	ATTR_FORMAT_NOTHROW_3_4): Remove.
	* builtins.def (snprintf, sprintf, sscanf, vsnprintf, vsprintf,
	vsscanf, strfmon, strftime, __snprintf_chk, __sprintf_chk,
	__vsnprintf_chk, __vsprintf_chk): Use ATTR_FORMAT_*_NOTHROW_*
	instead of ATTR_FORMAT_*_*.

From-SVN: r128158