Added MajorCookes latest zdoom/master fixes

Fixed: The new HIT* flags were checking the wrong actor.
Added flags for A_CheckLOF:
CLOFF_SETTARGET | CLOFF_SETMASTER | CLOFF_SETTRACER
An actor that causes A_CheckLOF (and only an actor) to succeed will set
the intercepting actor as its target, master, and/or tracer,
respectively.