Abstract classes for policyAgent
[Penlin] update to the clean version [fix bug, boost display, add textDisplay, add avoidClassic, support Item, bomb on initial layout]
[Penlin] update to hot version ! : Merge remote-tracking branch 'origin/policy'
[Penlin] merge from master with Policy :

Merge remote-tracking branch 'origin/master' into animation

Conflicts:
	testStructure/game.py
	testStructure/graphicsDisplay.py
	testStructure/graphicsUtils.py
	testStructure/layouts/avoidClassic.lay
	testStructure/pacman.py