[1.5] Disabling blur and shadows causes render issues on Mac Os X

[desertkun]

Hello! After updating to 1.5 i've noticed that disabling both blur and shadow causes render issues on Mac Os X.

Steps to reproduce:

1. Open standard "Box2dLightsTest"

2. Add

   rayHandler.setBlur(false);
   rayHandler.setShadows(false);
   

after rayHandler = new RayHandler(world)

Notice artifacts like this:

In 1.4 everything is fine.

[bitbrain]

If this is a blocker, can we get at least a 1.5-SNAPSHOT released to Nexus?