Bug 178604 when I add new columns to a tree in foo.xul, they appear to the far left (instead of the far right) for existing profiles

patch by neil@parkwaycc.co.uk r=varga sr=sspitzer

xpfe/global/resources/content/bindings/tree.xml

@@ -125,11 +125,8 @@
               col = col.boxObject.nextSibling;
             }
             var i;
-            // if there is no ordinal, come up with a big number, so that
-            // the column shows up on the far right
-            // see bug #178604
             for (i = 0; i < cols.length; ++i)
-              cols[i].setAttribute("ordinal", cols[i].getAttribute('ordinal') ? ((i*2)+1) : (((cols.length + i + 1) * 2) + 1));
+              cols[i].setAttribute("ordinal", (i*2)+1);
 
             // update the ordinal positions of splitters to even numbers, so that 
             // they are in between columns

xpfe/global/resources/content/xul.css

@@ -476,6 +476,7 @@ treecols {
 
 treecol {
   -moz-binding: url("chrome://global/content/bindings/tree.xml#treecol");
+  -moz-box-ordinal-group: 2147483646;
 }
 
 treecol.treecol-image {