builtin-attrs.def (ATTR_NOTHROW_NONNULL_1, [...]): Renamed from ATTR_NONNULL_1, ATTR_NONNULL_2 and ATTR_NONNULL_3.

gcc:
	* builtin-attrs.def (ATTR_NOTHROW_NONNULL_1,
	ATTR_NOTHROW_NONNULL_2, ATTR_NOTHROW_NONNULL_3): Renamed from
	ATTR_NONNULL_1, ATTR_NONNULL_2 and ATTR_NONNULL_3.

	(ATTR_NOTHROW_NONNULL_1_2, ATTR_NOTHROW_NONNULL_1_4,
	ATTR_CONST_NOTHROW_NONNULL_1, ATTR_PURE_NOTHROW_NONNULL_1,
	ATTR_PURE_NOTHROW_NONNULL_1_2, ATTR_MALLOC_NOTHROW_NONNULL_1):
	New.

	* builtins.def (DEF_EXT_FALLBACK_BUILTIN): Accept ATTRS argument.
	(BUILT_IN_BZERO, BUILT_IN_BCOPY, BUILT_IN_BCMP): Update comment

	(BUILT_IN_INDEX, BUILT_IN_RINDEX, BUILT_IN_MEMCPY,
	BUILT_IN_MEMMOVE, BUILT_IN_MEMCMP, BUILT_IN_MEMSET,
	BUILT_IN_MEMPCPY, BUILT_IN_STRCAT, BUILT_IN_STRNCAT,
	BUILT_IN_STPCPY, BUILT_IN_STRCPY, BUILT_IN_STRNCPY,
	BUILT_IN_STRCMP, BUILT_IN_STRNCMP, BUILT_IN_STRLEN,
	BUILT_IN_STRSTR, BUILT_IN_STRPBRK, BUILT_IN_STRSPN,
	BUILT_IN_STRCSPN, BUILT_IN_STRCHR, BUILT_IN_STRRCHR, BUILT_IN_NAN,
	BUILT_IN_NANF, BUILT_IN_NANL, BUILT_IN_NANS, BUILT_IN_NANSF,
	BUILT_IN_NANSL, BUILT_IN_PUTS, BUILT_IN_FPUTC, BUILT_IN_FPUTS,
	BUILT_IN_FWRITE, BUILT_IN_PUTS_UNLOCKED, BUILT_IN_FPUTC_UNLOCKED,
	BUILT_IN_FPUTS_UNLOCKED, BUILT_IN_FWRITE_UNLOCKED,
	BUILT_IN_STRDUP): Add "nonnull" attribute.

testsuite:
	* gcc.dg/nonnull-3.c: New test.

From-SVN: r66468