Merge vector-2.4 branch back to trunk.

svn merge sandbox/vector-2.4/@2307 sandbox/vector-2.4/@HEAD trunk/openlayers/


git-svn-id: http://svn.openlayers.org/trunk/openlayers@2803 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Ajax.js

@@ -221,7 +221,7 @@ OpenLayers.Ajax.Request.prototype = OpenLayers.Class.inherit( OpenLayers.Ajax.Ba
       ['X-Requested-With', 'XMLHttpRequest',
        'X-Prototype-Version', 'OpenLayers'];
 
-    if (this.options.method == 'post') {
+    if (this.options.method == 'post' && !this.options.postBody) {
       requestHeaders.push('Content-type',
         'application/x-www-form-urlencoded');
 
@@ -306,3 +306,17 @@ OpenLayers.Ajax.getElementsByTagNameNS  = function(parentnode, nsuri, nsprefix,
         parentnode.getElementsByTagNameNS(nsuri, tagname)
         : parentnode.getElementsByTagName(nsprefix + ':' + tagname);
 }
+
+/**
+ * Wrapper function around XMLSerializer, which doesn't exist/work in
+ * IE/Safari. We need to come up with a way to serialize in those browser:
+ * for now, these browsers will just fail.
+ * #535, #536
+ *
+ * @param {XMLNode} xmldom xml dom to serialize
+ */
+OpenLayers.Ajax.serializeXMLToString = function(xmldom) {
+    var serializer = new XMLSerializer();
+    data = serializer.serializeToString(xmldom);
+    return data;
+}