add support for screen-to-world cordinates about cocos2d-iphone HOT 5 CLOSED

Menus works with position now.

Patch by Patrick McEnvoy
Index: Menu.m
===================================================================
--- Menu.m  (revision 332)
+++ Menu.m  (working copy)
@@ -167,8 +167,8 @@
    for( MenuItem* item in children ) {
        *idx = i;
        CGRect r = [item rect];
-       r.origin.x += position.x;
-       r.origin.y += position.y;
+       r.origin.x += position.x + parent.position.x;
+       r.origin.y += position.y + parent.position.y;
        if( CGRectContainsPoint( r, point ) )
            return item;
        i++;

Patch by Alex Winston:
- (cpVect)absolutePosition
{
   cpVect absolutePosition = cpv(position.x, position.y);

   if (parent) {
       cpVect parentAbsolutePosition = [parent absolutePosition];
       absolutePosition = cpv(parentAbsolutePosition.x +
absolutePosition.x, parentAbsolutePosition.y + absolutePosition.y);
   }

   return absolutePosition;
}

fixed in r394