Speed up getAllBlocksFunction.

git-svn-id: http://blockly.googlecode.com/svn/trunk@1707 c400ca83-b69d-9dd7-9705-49c6b8615e23

core/workspace.js

@@ -231,7 +231,7 @@ Blockly.Workspace.prototype.getTopBlocks = function(ordered) {
 Blockly.Workspace.prototype.getAllBlocks = function() {
   var blocks = this.getTopBlocks(false);
   for (var x = 0; x < blocks.length; x++) {
-    blocks = blocks.concat(blocks[x].getChildren());
+    blocks.push.apply(blocks,blocks[x].getChildren());
   }
   return blocks;
 };