(Huge change: NO_MIDI is now a define, simply because that makes it easier for me to resolve merge conflicts if I can see the original code and the new code. Also means that people who REALLY miss MIDI can compile & fix it themselves :P)
* S_Init -> S_InitSfxChannels because it did mostly SFX anyway
* S_MusicPlaying, S_MusicPaused, S_MusicName, S_MusicExists new status methods
* I_MusicPlaying, I_MusicPaused
(cherry picked from commit f5f0b5e76c2fd405c8cc895dde653c5ed2652622)
* Make the I_Errors in filesrch.c more descriptive.
* Fix up the loading of sounds.kart such that it has SOME protection against being loaded with game-modifying lumps.
* SERIOUSLY fix up the MD5/mainwads++ section in D_SRB2Main, since 1) I broke it and 2) it was already a little broken in the first place but we just didn't notice it because #ifndef DEVELOP.
* A better representation of an Encore level, now with inverted graphics (a special remapping we can now use elsewhere whenever if we want!) and a floating Ruby!
* Decouple encore's setting from cv_kartencore on mapload. Instead, bake it into D_MapChange and related, which will only some of the time be fed by cv_kartencore's value.
* Encore mode now has a special mapheader palette setting, "encorepal", rather than using the same one as non-encore.
* d_main.c - fix the wipedef for skipping to the titlescreen to be the checkered one again.
* k_kart.c - Tweak drawtime's setting slightly.
* y_inter.c - Make endtic ALWAYS set when not netgame/splitscreen, to prevent an undesirable, possible hang whenever we add more stuff later.
* Time overs now supported, see below.
* Ties now supported!
* Code cleaned up.
* Play more sonicy tally sounds when counting your points.
* A bunch of time over related stuff!
* Exitlevel time overs everyone, which means no points for you.
* F-Zero-sorta-maybe style death if you're the last person on the course (and not the ONLY one) when someone crosses the finish line! (Or switches to spectator.)
* A bunch of music related stuff!
* Functionally reverted many of my changes to splitscreen and ending music, although the major changes to simplify music code are still kept.
* P_EndingMusic is genericised across gametypes, and only switches a single letter (and looping-ness) now!
* Fix exitlevel in race causing whatever you're listening to to keep playing.
* Make powerups call P_RestoreMusic.
* Put a call to P_EndingMusic into P_RestoreMusic.
* Unrelated crap.
* Make all palette swaps happen at the black point of fades, so they don't stick around awkwardly.
* Huh, I thought I did more than that. Oh well!
* Fixed the issue where your runs would be saved as belonging to the wrong character.
* Make the Ghost menu always visible. This isn't PERFECT, but it's better than hiding the option to toggle ghosts just because you're doing your first run as a new character.
* Fix the number of laps carrying over from MP(!!!!!!!!! plugged a huge security hole for the authenticity of replays...)
Other stuff!
* Hide map hell maps in the statistics.
* Clean up some nonet stuff in the menu.
* Put player setup last again, and tweaked its wording.
* Disable the special Kart waiting for players behaviour when not playing a netgame - seeing a double gamestate transition in record attack is weird.
* Fix all the bugs with skin not being set properly or kept synchronised with the multiplayer setup in record attack.
* Reduce the amount of flashing on the voting screen.
