What changed in EDuke32, build by build

Account for yscale when deciding if the sky is tall enough to repeat or not. Comment out code that is not working as expected.

Add def "globalflags" bit 4, and for individual palettes the "tint" flag bit 512. This makes fog the same for all shades. Make fog behave normally with sector structure .fogpal.

Fix visibility in Polymer with r_usenewshading 4.

Set r_parallaxskypanning to 1 by default.

Display paper-skies correctly when looking up or down.

Add EVENT_DISPLAYEND and EVENT_DISPLAYROOMSEND.

New projection hack algorithm: Keep zoom equivalent to Classic when looking straight ahead.

Address an oversight in r4600.

Game defs: Try loading def modules even if the engine reports failure.

Add wall.blend to structure access.

Connect wall.blend to Polymost in Lunatic builds with it enabled.

Add drawline256 and drawlinergb commands that call the internal functions used for the automap lines.

Fix yoffset bouncing of face sprites with cstat 128.

Check that texture entries have a non-skybox filename before using it in texcache_fetchmulti.

Don't cut off a row and/or column of texels when drawing floor-aligned sprites with odd dimensions.

Add new tint flag 256, which always skips hightile when picking an image source.

Disable G_FadeLoad because it doesn't work in any renderer and only causes glitches.

Move duke3d and engine directory definitions to their proper spots, as they no longer need early definition after the great repository rearrangement.

Factor out common uses of COMMONFLAGS, COMPILERFLAGS, and LINKERFLAGS into COMPILER_* and LINKER.

Fix disabling the Polymer checkbox in the Win32 startup window when POLYMER=0.

Use the override keyword when implicitly disabling Polymer and libvpx when USE_OPENGL=0.

Rename E_PostInitTables back to E_PostInit and move it back to where it belongs in engine.c (i.e. preinitengine, initengine, "postinitengine"). It should not have been changed.

Fix linking of mdpause variable with POLYMER=0 in screens.c, exposed by Visual Studio. DONT_BUILD.

Add #ifdef USE_OPENGL forgotten in r5024 that causes an OOB access in scansector() and glitchy mirrors with USE_OPENGL=0.

Extend undefinetile to also remove voxels, hightile (including skyboxes) and models.

Add vox_undefine().

Amend r5910 so that the problem is mitigated even when the map load takes place with a different renderer.

Clear wsprinfo[] upon map load. This should address some remaining instances of wall-ornamented sprite z-fighting.

GL .blend support.

In 8-bit, change the precedence of .alpha and .blend.

Remove the Polymer aspect ratio option, as it was always broken, and I don't know what purpose it has besides configuring non-square pixel stretching, which we have a long way to go in terms of configuring anyway.

Some float optimizations in the engine.

Fix ghost tsprite bug introduced in previous commit.