Adds a new statue hostile mob!

This hostile mob is very much like other monsters that move/kill you when you don't look at them.
This mob is also designed to be player controlled and has spells to get around the 360 vision problem, such as flickering lights and causing people around it to go blind for a short duration. It can also toggle its own night vision.

CANPUSH is now used by simple_animals
Added 4 directional sprites for the statue.

Previews:

http://filesmelt.com/dl/demo_statues.gif
http://filesmelt.com/dl/demo_statues_player.gif