* Remove some outdated comments and change a couple more ++'s
* Support for rotating monster sprites during the DOOM II cast call, DOOM 64 style.
* Refactored rotation check in skin viewer to match more compact code in F_CastDrawer.

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2719 86ba831e-150c-0410-ab35-e06eaae15ed9