Lua: nextmapoverride & skipstats changing outside of G_ExitLevel

See merge request STJr/SRB2!396

Use the `offsetof` function

See merge request STJr/SRB2!394

OpenGL z-fighting fix [by Azeonus]

Closes #43

See merge request STJr/SRB2!395

Feature: Save override for level header

See merge request STJr/SRB2!392

Lua: Kart textures backport (non-foolish vers)

See merge request STJr/SRB2!391

Fix remote viewpoint cameras for real this time

This is desparately needed for KIMOKAWAIII, since there's many instances I need to change nextlevel but still want to use the existing player exit stuff.

Software plane fixes

Automap fix

Accept '+' as substitute for '\' for sprite frames (PK3)

See merge request STJr/SRB2!380

Kind of like 2.2's, but with backwards-compatability with 2.1

Revert "Merge branch 'kart-luatextures-backport' into 'next'"

See merge request STJr/SRB2!390

This reverts merge request !387

SDL: Force use DirectSound driver to fix wrong-pitch sound effects

See merge request STJr/SRB2!375

Lua: Expose R_TextureNumForName

See merge request STJr/SRB2!387

Lua: Add deprecation warning to admin

See merge request STJr/SRB2!386

Backport from SRB2Kart

Opengl BSP cleanup and fixes

See merge request STJr/SRB2!382

Add symlink to debian package for /usr/games/srb2

See merge request STJr/SRB2!385

This reverts commit 09d9a555.