Added /searchitem or //l command to lookup items and block by name and ID.

src/com/sk89q/worldedit/blocks/ItemType.java

@@ -300,6 +300,15 @@ public enum ItemType {
         return name;
     }
     
+    /**
+     * Get a list of aliases.
+     * 
+     * @return
+     */
+    public String[] getAliases() {
+        return lookupKeys;
+    }
+    
     /**
      * Returns true if an item should not be stacked.
      *