What changed in EDuke32, build by build

Fix flipped HUD model rendering

fix NPOT tile rendering when hightile option is disabled

workaround for texcache expecting all mipmap levels to be available

fix typo causing bug where persistentStreamBuffer was being reset to the config value when it should be disabled

fix bug where polymost2_drawVBO() wouldn't reset the bound buffer state properly for polymost1

Fix yoffset bouncing of face sprites with cstat 128.

fix texture panning floatiness on slight slopes

Fix shading on ART tiles with fullbrights displayed without masking, such as on a whitewall.

Fix voxels so palette colors are treated as 8-bit, not 6-bit. Overlooked in r5349.

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.

make spriteext[].{x,y,z}off independent of xdimen/viewingrange/aspect.

fix my r_usetileshades==2 sub-method.

fix 'zadd' DEF token handling. (Polymer has it right.)

Fix ART offset and face sprite flipping interaction.

fix mirror-related oob access analogous to r1872's fix for classic.

crash prevention for bad pal sprites (and warning in Mapster 3D mode)