Screen flipping in OpenGL is no longer done by inverting the screen
polygons.

Player spin frames on MD2's interpolate correctly when moving slowly.

Translucent Midtextures using holes with textures in them now work when
there is no FOF's above their sector.

Screen Wipes now work as they did in 2.0.x.

First screen in split-screen is now not completely black.

Fixes MD2's using sprites on the first frame when they're loaded.

Fixed wall textures breaking when Y offset of the wall was too high.

With whitespace fixup

Patch Fill Drawing for intermission has been fixed to loop properly in
non aspect correct resolutions.

More redwall sky shenanigans gone.

Light no longer goes wrong when lightlevel of a sector is negative.

LightLevelToLum unused by everything now, it seemed to be giving wrong
values for lightlevels.

V_FLIP in OpenGL.

Merge branch 'master' of https://github.com/Sryder13/SRB2

Fixed flashes for OpenGL Nukes/Teleports etc.

Removes HOMs from OpenGL.
This also seems to have made skyboxes not draw ontop of everything else
on Intel GPU's.

Post processing no longer done in the skybox.

Pulled

change version number to 2.1.4, add linux64 info

Huge thanks to Alam_Squeeze from #srb2fun. :D

Fixes intermission pictures being taken in OpenGL.

Hopefully.

OpenGL Fixup