[Bf-committers] Add properties that are auto generated when placing a logic block.

[Jacob Merrill]

Add properties that are auto generated when placing a logic block.

Example Add Ray sensor logic block

Adds
object['HitMat']
object['HitPos']
object['Hit']

that can be used to access these properties,  simalar to object.castRay()

but exposed as a property if a box is checked?