helper functions for AI: testing if an object is in line of sight (and optionally if it's enabled), if a point is clear, and if an object is within a given angular field of view (optionally specified beyond a stock 45 degrees, as well as optionally checking if the target is enabled)
conforms losmask to standard nomenclature
revised checkInLos and CheckFoV. boith now take all parameters as optional as suggested, with a target value of NULL resulting in checking the present one.
cleaned up internal usage of checkInLos, tightened the typemask used, and provided further documentation.
logical inversion to stock functionality as requested. Now assumes if it has a target and does not hit anything Static by the time the ray terminates, then it must be the right target.
requested alterations.
bool AIPlayer::checkLosClear(Point3F _pos) removed as not fit for purpose at the present time. Something to revisit when I'm spread less thin, or give someone else a crack at it.
Merge pull request #649 from Azaezel/aiPlayer_utility

AIPlayer utility methods