Allowteamchange fix
Fixes "allowteamchange no" to actually work properly and NOT desync you from the game in most cases. You can now switch TO spectator freely (as intended it turns out), and switching FROM spectator is prohibited. The "Enter Game" menu option in Match/Tag now displays one of those blue window notices just like with "Change Teams" in CTF/Team Match if you cannot change teams right now. Everything else works as you'd expect.
The de-sync issue was originally reported here https://mb.srb2.org/showthread.php?p=789965#85
See merge request !168
Used instead of pLocalPalette when attempting to determine objective truths, such as "the colours of this gif without color profile modification" and "what indicies should this colormap remap to".
Also, made f_wipe.c's paldiv only get calculated once.
-Removed a redundant boolean related to texture loading in P_AddWadFile.
-Started working on handling PK3s differently, except that I'm not sure about what I'm doing.
I don't know what to do from now on for today, so I'll leave it here for now.
-PK3 files are now properly loaded as files.
-PK3 lumps are still being treated the same way as WAD files. It means they're dependant on markers, if that makes any sense in the context of a ZIP file (it doesn't). I haven't worked out this part yet but I obviously intend to do so.
-I don't know if the lumps' position address is correct, we'll figure out when I fix the thing from above.
-Tweaked compression conditional to a switch-case format, looking towards adding several comrpession algorithms; haven't removed the previous "compressed" boolean yet.
-Added dynamically allocated name strings for lumps; haven't removed the previous name field.
-Added rudimentary PK3 central directory recognition; nothing is actually loaded in the end.
* Serious refactor of - and internal exposure of - what has become S_StartCaption().
* Renaming of a few existing captions.
* The prevention of access to - or writing over - sfx_None's stuff in SOC or Lua.
* The new Lua wrapper function S_StartMusicCaption(string, tics, optional player), which essentially allows custom music captions to be created. (This is best used for stuff like final lap music in SRB2 Kart or bonus time in a thokker-like game, not a comprehensive Now Playing expy. That'd be a different kettle of fish.)
Also, updated all the lock-on stuff to use P_IsLocalPlayer instead of rolling my own.
A less memetic message: On permission of Mystic, rejiggered a few things such that Race uses cv_competitionboxes, allowing the menu to be nicer.
Also:
* disabled the doomednum for ? boxes
* made A_MixUp play sfx_lose if you're in a gametype that can't use it
* Removed the all-teleporters option from cv_competitionboxes. It could just be done by tweaking the random monitor toggles, anyways.
This means setting the skybox view angle is no longer stupid, objectplace no longer breaks skyboxes, and Lua-defined skybox mobjs can actually set a Z position more easily now.
Falling rocks fix
This fixes the rock spawners' rocks not being removed if they rolled down to the ground from a slope rather than bouncing (see https://mb.srb2.org/showthread.php?t=41963)
See merge request !162
This allows tag lists, gravity, weather, and the "CheckFor" vars to be initialised before running P_LoadThings or P_ResetDynamicSlopes, in case they could affect mobj spawning or cause a netgame desync somehow by carrying over the previous level's values
DrawFill made not stupid
made it more consistent with other drawing functions; doesn't draw off of the sides, and doesn't ignore snapping or widths for reasons that don't make sense
(for instance: the green bar in MI's test script showed *above* the blue one in non-green resolutions in 2.1.17)
See merge request !173
