In environments without zlib installed, png would fail to build since
it can't find zlib.h. The zlib build's generated public include dir
needs zlib.h to work.

openmpt fails to build because it can't find Rpcrt4, which is not a
necessary link under mingw, but exists in some mingw-w64 toolchains.
It is only needed for MSVC.

(cherry picked from commit fcf69001ada08077f82d3fc8510dcd24b4433e64)

(cherry picked from commit fb0f0c5e6c161b4b88439cda84c8b6cae9d236cc)

cmake: build zlib manually in internal build

See merge request STJr/SRB2!1856

(cherry picked from commit 3597957af13878854c02305a0aec5ca744209ef2)

# Conflicts:
#	thirdparty/CMakeLists.txt

Add voltage damage type, for Lightning Shield

See merge request KartKrew/Kart!804

Mobj scale explosions smoldering rising momentum

See merge request KartKrew/Kart!803

Mobj scale weight buff from moving above top speed

See merge request KartKrew/Kart!802

Start on Test Run by default, only in DEVELOP builds

See merge request KartKrew/Kart!797

Reset pitch/roll on springs + trick panels

Closes #348

See merge request KartKrew/Kart!798

Fix solid midtextures

Closes #349

See merge request KartKrew/Kart!799

Egg Capsule fixes

See merge request KartKrew/Kart!800

Use player_t parameter in S_ReducedVFXSoundAtVolume

See merge request KartKrew/Kart!790

Move all typedef into one file

See merge request KartKrew/Kart!791

Rather than randomized Battle starts.

- The pieces do the positioning, instead of the capsule itself. This makes it so that the parts update after the capsule has applied its momentum.
- Use proper inradius instead, so the sides line up.
- Because of the above change, the capsule as a whole is bigger. This means...
- Increased hitbox again
- Changed a few of the sprites

Old vanilla-ass code for platform-like objects that is conflicting super hard with bumping / horizontal momentum. If we ever have a moving platform object this code should be brought back only for that object, and not solid objects as a whole.

UDMF's ML_MIDPEG == Binary's (!!(linedef->flags & ML_DONTPEGBOTTOM) ^ !!(linedef->flags & ML_MIDPEG)). This is converted in P_ConvertBinaryLinedefFlags

Make vsync default to off

See merge request KartKrew/Kart!794

cmake: let SRB2_SDL2_EXE_NAME override git branch

See merge request KartKrew/Kart!796

This makes testing easy by starting the game with -server

SRB2_SDL2_EXE_NAME is now "" by default. Internally
defaults to ringracers.

cmake: Rollup of srb2-side changes

See merge request KartKrew/Kart!758

mobj_t instead of struct mobj_s

d_net.c: rename node_t to netnode_t

All typedefs for structs that were present in other header
files have been moved to here. (Except node_t because the
renderer and netcode both define node_t LOL.)

More bot crudules

See merge request KartKrew/Kart!788

Fix linedef type 499 binary->UDMF conversion

See merge request KartKrew/Kart!787