stdio-opt-1.c: Test __builtin_ style too.

stdio-opt-1.c: Test __builtin_ style too.

	* gcc.c-torture/execute/stdio-opt-1.c: Test __builtin_ style too.
	* gcc.c-torture/execute/stdio-opt-2.c: Likewise.
	* gcc.c-torture/execute/string-opt-1.c: Likewise.
	* gcc.c-torture/execute/string-opt-2.c: Likewise.
	* gcc.c-torture/execute/string-opt-3.c: Likewise.
	* gcc.c-torture/execute/string-opt-4.c: Likewise.
	* gcc.c-torture/execute/string-opt-6.c: Likewise.
	* gcc.c-torture/execute/string-opt-7.c: Likewise.
	* gcc.c-torture/execute/string-opt-8.c: Likewise.
	* gcc.c-torture/execute/string-opt-9.c: Likewise.
	* gcc.c-torture/execute/string-opt-10.c: Likewise.
	* gcc.c-torture/execute/string-opt-11.c: Likewise.
	* gcc.c-torture/execute/string-opt-12.c: Likewise.

	* gcc.c-torture/execute/string-opt-3.c: Test rindex.
	* gcc.c-torture/execute/string-opt-4.c: Test index.

From-SVN: r38497