cmp(1) is POSIX compliant so mention it in the manpage

Update format specifiers for -l as specified by POSIX.

cmp.1

@@ -34,3 +34,9 @@ An error occured.
 .Sh SEE ALSO
 .Xr comm 1 ,
 .Xr diff 1
+.Sh STANDARDS
+The
+.Nm
+utility is compliant with the
+.St -p1003.1-2008
+specification.

cmp.c

@@ -78,7 +78,7 @@ main(int argc, char *argv[])
 				       argv[0], !argv[1] ? "<stdin>" : argv[1], n, line);
 			exit(Diff);
 		} else {
-			printf("%4ld %3o %3o\n", n, b[0], b[1]);
+			printf("%ld %o %o\n", n, b[0], b[1]);
 			same = 0;
 		}
 	}