remove useless or duplicate functions from Util.js -- no more: Array prepend() append() -- use push() and unshift(). clear() and indexOf() both removed as they are duplicated in Prototype.js -- all instances replaced and tests updated.

git-svn-id: http://svn.openlayers.org/trunk/openlayers@1136 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Util.js

@@ -670,42 +670,12 @@ Array.prototype.clone = function() {
   return clone;
 };
 
-/**
-* @param  {Object} item
-*/
-Array.prototype.prepend = function(item) {
-    this.splice(0, 0, item);
-};
-
-/**
-* @param  {Object} item
-*/
-Array.prototype.append = function(item){
-    this[this.length] = item;
-};
-
 /**
 */
 Array.prototype.clear = function() {
     this.length = 0;
 };
 
-/**
-* @param {Object} element
-*
-* @returns The first index of the element in the array if found. Else returns -1
-* @type int
-*/
-Array.prototype.indexOf = function(element) {
-    var index = -1;
-    for(var i=0; i < this.length; i++) {
-        if (this[i] == element) {
-            index = i;
-            break;
-        }
-    }
-    return index;    
-}
 
 /** NOTE: Works only with integer values does *not* work with floats!
  *