Added descendantsNamed method to XmlElement prototype.

Author: aleph1

lib/xmldoc.js

@@ -131,6 +131,20 @@
     }
     return undefined;
   };
+  
+  XmlElement.prototype.descendantsNamed = function (name) {
+     var matches = [];
+
+     for (var i = 0, l = this.children.length; i < l; i++) {
+       var child = this.children[i];
+       if (child.type === "element") {
+         if (child.name === name) matches.push(child);
+         matches = matches.concat(child.descendantsNamed(name));
+       }
+     }
+
+     return matches;
+   };
 
   XmlElement.prototype.descendantWithPath = function (path) {
     var descendant = this;