Official support for Apple Retina display resolution.
TODO: finish elimination of MAX_SCREEN limits... SoM :P

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2699 86ba831e-150c-0410-ab35-e06eaae15ed9
Minor changes in MN_BuildVidmodeTables

git-svn-id: http://mancubus.net/svn/hosted/eternity/trunk@2700 86ba831e-150c-0410-ab35-e06eaae15ed9