-Avoid cache thrashing in the renderer when the camera is facing a very close wall in 1024x768. A small amount is added to the width of the screen buffer when it's allocated.

git-svn-id: http://odamex.net/svn/root/trunk@3924 b0bcef46-2027-0410-bd56-ab726e9a1d04
-Switch from QWORD to unsigned int data types for the tic timing functions.

git-svn-id: http://odamex.net/svn/root/trunk@3925 b0bcef46-2027-0410-bd56-ab726e9a1d04
-Add support for pillar and letter boxing. If the video width:height ratio > 4:3 and vid_widescreen is disabled, pillar boxing is used. If the video width:height ratio = 4:3 and vid_widescreen is enabled, letter boxing is used.
-Replaced the r_widescreen CVAR with vid_widescreen (on/off only). Stretch and Zoom have been removed until a straight-forward mode selection system is devised.


git-svn-id: http://odamex.net/svn/root/trunk@3926 b0bcef46-2027-0410-bd56-ab726e9a1d04