Circle of Blue Spheres were spawning in place of Rings

See merge request STJr/SRB2!576

The original code used a switch case, not AND 1. :V

Slight touchups on the tokenizer

See merge request STJr/SRB2!569

Mapdataload refactor

See merge request STJr/SRB2!568

Hack P_SpawnHoopsAndRings into little pieces

See merge request STJr/SRB2!572

More customisable title card

See merge request STJr/SRB2!552

Wipe styles cleanup

See merge request STJr/SRB2!525

The "SRB2" directive, for warning if a SOC isn't compatible

See merge request STJr/SRB2!551

OpenGL GIF movie recording

See merge request STJr/SRB2!549

Fix model texture blending

See merge request STJr/SRB2!546

Init MUSICDEFs regardless of music state

See merge request STJr/SRB2!532

Fixed missing break in offset handling for horizontal springs

See merge request STJr/SRB2!571

-Hoops are spawned in P_SpawnHoop
-Item patterns are spawned in P_SpawnItemPattern
-Ring-like items are spawned normally via P_SpawnMapThing
-Bonus time items are spawned via P_SpawnBonusTimeItem, which is a wrapper for P_SpawnMapThing

Handle signals correctly on linux

See merge request STJr/SRB2!530

Hack P_SpawnMapThing into tiny little pieces

See merge request STJr/SRB2!564

Replaced functions for spawning premade rows of rings with a function for spawning a generic row of rings (groundwork for UDMF)

Turned nightsreplace into a macro so we have don't have to keep dragging it along as a function parameter

Made a mapthing-independent version of P_GetMobjSpawnHeight so P_SpawnHoopsAndRings subfunctions can use it instead of duplicating code.

Netarchive compare changes

See merge request STJr/SRB2!563

Refactor P_SpawnHoopsAndRings

See merge request STJr/SRB2!562

P_SpawnMapThing(): Separated the giant post-Lua hook switch-case statement into its own function, and separated some of the larger cases into their own function as well

Don't reload mapthings in P_LoadThingsOnly() as they should no longer be modified past the mapload procedure.