Other notes:
* on second thought I'll keep the hw_clip functions' gld prefixes rather than HWR, not like it matters either way
* despite the extra lag it does fix the issues with translucent walls and such when displayed at different vertical angles, such as with the GFZ1 waterfall
* Enable SECTORSPECIALAFTERTHINK since we probably really want to use that sloped lava wave in RVZ.
* Allow for infinite lives to be set via the setlives command/Pandora's Box.
* Refactor P_DoFiring(), with guidance from Sal.
* Correct the CRAWLA HONCHO\nCAN NOW BECOME\nSUPER CRAWLA HONCHO sliding movement in non-green resolutions.
* DBG_PLAYER split out from DBG_DETAILED. (The difference I'm intending here is whether it's referring to stuff in the player struct, or stuff in the mobj struct.)
* Function pointer for text so both modes can show the same stuff if it's not taking over the entire screen, and only show the "INFO NOT AVAILABLE AT THIS RESOLUTION" if it's in danger of going off the bottom.
* Completely redid how splitscreen works, with eventual support for quads. Squish per-player stuff automatically into the right places! Works in GL, associated flag kills V_SPLITSCREEN.
* Seriously update the lives-drawing function for all gametypes, with strings that replace the lives number whenever it's missing (deprecates SKINNAMEPADDING).
* Improved how the nosshack works, alongside many other refactorings.
Fixes with respect to sector special touching and slopes
Some important stuff.
* SF_TRIGGERSPECIAL_TOUCH now actually works. Previously, it abandoned the loop early if ANY bounding sector didn't have that sector flag, which it likely didn't - only checking one extra sector's worth of FOFs. Also, the teleport handling there is more robust, and actually bails out if you teleport, instead of just awkwardly continuing through the loop.
* SF_TRIGGERSPECIAL_TOUCH now works for each time thinkers, too.
* Fixed a bug with being able to go under lava because P_CheckSolidLava doesn't take slopes into account.
* Also, P_CanRunOnWater supports slopes now too.
* Quicksand supports slopes and reverse gravity now.
* Space Countdown supports slopes now.
Also, an experiment behind a #define which currently isn't turned on:
* UNDER A #define, "SECTORSPECIALSAFTERTHINK", WHICH IS CURRENTLY TURNED OFF, BUT I WILL WANT TO TURN ON IN INTERNAL: Moved sector touch handling to P_PlayerAfterThinker (from P_PlayerThinker before movement). Allows for being able to trigger moving slope sectors that are going down, most specifically lava (didn't matter in RVZS in 2.1 because you could clip through the sides and go underneath the lava, causing damage - a sloped testwad version of that prevented going underneath.) Also fixes one-frame standing on deathpits before you die. Basically means sector triggers effectively happen one tic earlier, since it's after movement.
See merge request !131
