* gcc.c-torture/execute/builtins/lib/strcat.c: New.
	* gcc.c-torture/execute/builtins/string-9-lib.c: New.
	* gcc.c-torture/execute/builtins/string-9.c: New, from
	string-opt-9.c.  Adjust for execute/builtins framework.
	* gcc.c-torture/execute/string-opt-9.c: Delete.

From-SVN: r70435