Added snap building still needs some work to make more items snap.

http://epochmod.com/forum/index.php?/topic/6036-release-build-snapping-extended-v16-updated-02202014/
Some extra snap points added by tkdmaster.

http://epochmod.com/forum/index.php?/topic/6036-release-build-snapping-extended-v16-updated-02202014/?p=65166