getopt_ulflags -> getopt32.

It is impossible to formulate sane ABI based on
size of ulong because it can be 32-bit or 64-bit.
Basically it means that you cannot portably use
more that 32 option chars in one call anyway...
Make it explicit.

coreutils/head.c

@@ -60,7 +60,7 @@ int head_main(int argc, char **argv)
 	}
 #endif
 
-	/* No size benefit in converting this to bb_getopt_ulflags */
+	/* No size benefit in converting this to getopt32 */
 	while ((opt = getopt(argc, argv, head_opts)) > 0) {
 		switch (opt) {
 #if ENABLE_FEATURE_FANCY_HEAD