2008-09-30 Rudolf Polzer divVerent(at)alientrap.org
* q3map2: fix deluxemap when lit from the wrong side as good as possible
- (by ignoring the deluxemap contribution). now the invariant "deluxemap
+ by ignoring the deluxemap contribution. Now the invariant "deluxemap
vector points away from the surface" should hold. Avoids sudden black
spots when deluxemapping.