MINOR: acl: alphanumerically sort the ACL dump

The mechanism is similar to others. We take care of sorting on the
keyword only and not the fetch_kw which is not unique.
diff --git a/src/acl.c b/src/acl.c
index 77d6717..15ca766 100644
--- a/src/acl.c
+++ b/src/acl.c
@@ -1312,17 +1312,28 @@
 void acl_dump_kwd(void)
 {
 	struct acl_kw_list *kwl;
+	const struct acl_keyword *kwp, *kw;
 	const char *name;
 	int index;
 
-	list_for_each_entry(kwl, &acl_keywords.list, list) {
-		for (index = 0; kwl->kw[index].kw != NULL; index++) {
-			name = kwl->kw[index].fetch_kw;
-			if (!name)
-				name = kwl->kw[index].kw;
-
-			printf("%s = %s -m %s\n", kwl->kw[index].kw, name, pat_match_names[kwl->kw[index].match_type]);
+	for (kw = kwp = NULL;; kwp = kw) {
+		list_for_each_entry(kwl, &acl_keywords.list, list) {
+			for (index = 0; kwl->kw[index].kw != NULL; index++) {
+				if (strordered(kwp ? kwp->kw : NULL,
+					       kwl->kw[index].kw,
+					       kw != kwp ? kw->kw : NULL))
+					kw = &kwl->kw[index];
+			}
 		}
+
+		if (kw == kwp)
+			break;
+
+		name = kw->fetch_kw;
+		if (!name)
+			name = kw->kw;
+
+		printf("%s = %s -m %s\n", kw->kw, name, pat_match_names[kw->match_type]);
 	}
 }