convert to Draft-Proposed ANSI C

R=dmr
DELTA=5  (2 added, 0 deleted, 3 changed)

Author: Brian Kernighan

src/pkg/debug/macho/testdata/hello.c

@@ -1,3 +1,6 @@
-main() {
-	printf("hello, world");
+#include <stdio.h>
+
+main()
+{
+	printf("hello, world\n");
 }