The extra argument is the music name, as passed into
P_PlayJingleMusic(player, musname), to run the hook for, optional.
Arguments are (player, musname) - the latter to allow global hooks
that still differentiate between different tracks.

None of these are implicitly sync-safe anyway, and most have
no need to be walled off from HUD code or intermission thinkers.

2.2.2 preparation

See merge request STJr/SRB2!811

Warp gamedata corruption fix

See merge request !802

Update copyright year

See merge request STJr/SRB2!801

Fix OpenGL "color bug"

See merge request !795

Add more strings (and respective functions) for v.drawString().

See merge request STJr/SRB2!770

New skin colors, add support for preferred opposite color to save cards, new lua features.

See merge request !787

Exitmove tweaks

See merge request !709

Fix R_CacheRotSprite not working with PNG lumps

See merge request STJr/SRB2!800

Fix seenames not working without a SeenPlayer hook

See merge request STJr/SRB2!799

Clear setrenderneeded after calling VID_CheckRenderer

See merge request STJr/SRB2!793

Add pw_justlaunched to tell modders when a player launches from a slope

See merge request !792

Allow more options for when the titlecard shows up

See merge request !765

Fix the issue !678 did, but just don't exit if the file was added twice

See merge request !753