suppress warnings about easch <applet>_main() having

no preceding prototype

coreutils/dos2unix.c

@@ -82,6 +82,7 @@ static int convert(char *fn)
 	return 0;
 }
 
+int dos2unix_main(int argc, char *argv[]);
 int dos2unix_main(int argc, char *argv[])
 {
 	int o;