Back out change that treated "refuse options = compress" the same as

"dont compress = *", by request of Tridge.  Instead, mention the difference
in the man page.  Also, put in a shortcut in set_compression() to recognize
"*" earlier instead of going through malloc/strtok/fnmatch/free cycle.

options.c

@@ -238,13 +238,6 @@ static int check_refuse_options(char *ref, int opt)
 	while ((p = strstr(ref,name))) {
 		if ((p==ref || p[-1]==' ') &&
 		    (p[len] == ' ' || p[len] == 0)) {
-			if (opt == 'z') {
-				/* don't actually refuse this one, just */
-				/*  minimize the compression level for now */
-				extern int default_compression_level;
-				default_compression_level = 0;
-				return 0;
-			}
 			slprintf(err_buf,sizeof(err_buf),
 				 "The '%s' option is not supported by this server\n", name);
 			return 1;