Allow the log tag to act as a generalized parameter to an action extension script -- take 2

git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@2584 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb

Shorewall/firewall

@@ -4276,6 +4276,9 @@ merge_levels() # $1=level at which superior action is called, $2=level at which
     set -- $(split $1)
 
     case $superior in
+	*::*)
+	    fatal_error "Invalid ACTION $superior"
+	    ;;
 	*:*:*)
 	    case $2 in
 		'none!')