Build 8572
SVN-
fix NPOT tile rendering when hightile option is disabled
SVN handles and Git names are merged into one person.
fix NPOT tile rendering when hightile option is disabled
fix texture panning floatiness on slight slopes
fix wall and floor sprites clipping into or z-fighting with surfaces (replaces glDepthRange() hacks for sprites), add r_nofog cvar for debugging, reduce the total number of OpenGL calls by only calling glFogi() to set the fog mode when initializing the renderer or changing r_usenewshading.