Dedicated bonuses fix
Fixes the issue reported here: https://mb.srb2.org/showthread.php?t=42530
What it turns out is going on is that making the game bail out in the middle of Y_StartIntermission if you're a dedicated server's host prevents the game from awarding the players bonuses in coop mode. Therefore it's not just special stage bonuses, but ANY kind of bonuses that can cause desyncs if someone loses all their lives.
This can be merged to master since it's a change only for dedicated server hosts, and should otherwise be compatible with 2.1.18.
See merge request !186
Endgame code refactor
This is mostly just some code cleanup and moving about:
* `Y_EndGame` was moved from from y_inter.c/h to g_game.c/h, and renamed to `G_EndGame`. Frankly the old place that function lived didn't make sense, since it has nothing to do with tally screens directly.
* Most of `Y_FollowIntermission`'s code was removed, because `G_AfterIntermission` does it all already.
* And lastly, `G_ExitLevel` uses `HU_ClearCEcho()` instead of `HU_CEcho("")` to clear CEchos from the screen.
The only visible changes in-game from the above should be just that log.txt stops adding empty new lines when you complete a level, and CEchos will always be cleared after tally screens when a level goes to credits/evaluation next.
See merge request !98
SDL fixes and cleanup
Mostly cleanup tbh. I noticed a few things that bugged me when examining SDL's code recently, thought I might as well fix them up a bit.
These changes definitely does not affect netplay, so this can be merged to master just fine.
See merge request !183
Nojumpspin fix
MI can attest to this being a problem that's now solved.
To test, check out root/!LatestSRB2Files/srb2win_branch_jumpfixes.exe and root/MonsterIestyn/robohood.wad.
See merge request !95
R_InitExtraColormaps fix
This fixes the `R_InitExtraColormaps` function so that it correctly realises there are no "extra colormaps" actually in SRB2's files, rather than telling you there are 6 extra colormaps on game startup (or however many WAD files total you have added).
For those who don't know what the function does, it searches for C_START/C_END markers, and if they exist, adds any lumps inbetween to a list of extra colormaps internally. They are never used by the game though, since we last supported colormaps of that kind so long ago I don't think anyone remembers when anymore (definitely more than a decade at least).
Merging to next since I don't know if this would cause any netplay issues or not tbh.
See merge request !182
This is just in case someone actually tries to dump in C_START/C_END and "add" colormaps using them, not that they would ever be used currently anyway.
