c-common.c (c_common_nodes_and_builtins): Set prototype parameters for...

c-common.c (c_common_nodes_and_builtins): Set prototype parameters for __builtin_fputs, __builtin_fputc and __builtin_fwrite.

	* c-common.c (c_common_nodes_and_builtins): Set prototype
	parameters for __builtin_fputs, __builtin_fputc and
	__builtin_fwrite.  Don't declare plain fputc as a builtin.

testsuite:
	* gcc.c-torture/execute/stdio-opt-1.c: Also test
	__builtin_fputc and __builtin_fwrite.

From-SVN: r38605