- switch to 900913

- add google 
- add osm
- fix numerous smaller bugs
- smaller refactorings


git-svn-id: http://svn.openlayers.org/trunk/openlayers@12335 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Request/XMLHttpRequest.js

@@ -217,6 +217,9 @@
         }
     };
     function fXMLHttpRequest_send(oRequest) {
+        // always set the X-Requested-With:-header
+        // oRequest._object.setRequestHeader("X-Requested-With", "XMLHttpRequest");
+        
         oRequest._object.send(oRequest._data);
 
         // BUGFIX: Gecko - missing readystatechange calls in synchronous requests