Introduced entity pointers; Updated entity parenting

proj/sxgame/vs2013/sxgame.vcxproj

proj/sxgame/vs2013/sxgame.vcxproj.filters

source/common

source/game/BaseEntity.cpp

source/game/BaseEntity.h

source/game/BaseLight.h

source/game/BaseTool.h

source/game/BaseTrigger.h

source/game/BaseWeapon.h

source/game/EditorObject.cpp

source/game/EditorObject.h

source/game/EntityManager.cpp

source/game/EntityManager.h

source/game/EntityPointer.cpp

source/game/EntityPointer.h

source/game/FuncTrain.h

source/game/NPCBase.h

source/game/PathCorner.h

source/game/Player.h

source/game/PointCamera.h