The Browncoat Update - InheritedRotAngleOffset does nothing for guns on ACrab turrets

[pawnishoovy]

ACrab guns on Turrets do not respect InheritedRotAngleOffset. There IS a MountedGunAngleOffset (or something like that) on Turrets but this is also not respected or appropriate when changed via lua.

Whatever strange code Turrets currently use to angle their mounted guns needs to be refactored so InheritedRotAngleOffset works.

Currently, the Coalition Bunker Cannon has test case code that should start doing something when this works.