Texture fixes

See merge request STJr/SRB2Internal!135

Merge branch '100-make-slopes-static-by-default-and-require-flag-to-turn-them-dynamic' into 'master'

Resolve "Make slopes static by default, and require flag to turn them dynamic."

Closes #100

See merge request STJr/SRB2Internal!140

Pretty stuff

See merge request STJr/SRB2Internal!131

# Conflicts:
#	src/hardware/hw_draw.c

# Conflicts:
#	src/f_finale.c
#	src/hardware/hw_draw.c
#	src/hardware/hw_main.c
#	src/hardware/r_opengl/r_opengl.c
#	src/sdl12/hwsym_sdl.c
#	src/sdl12/i_video.c

* Make sure showfps never covers anything relevant to the base game.
* Tweak spectator text for raising/lowering.
* Minor code-smell squishes.

* Fix that one comment Digiku mentioned. ;P
* Make extra lives/100 ring rewards consistent between lives being relevant and lives being infinite/not present, which was a problem this branch made evident when Race ended up getting the infinite lives symbol!

This reverts commit 8bd91bd2.

Note to self: read through the fucking merge requests

Feel free to reorganize as necessary.

Opengl Quick Fixes

See merge request STJr/SRB2!237

I wasn't aware of the cvar, this should do for now since I don't believe any maps use these software tricks, probably an old leftover from DOOM.

* Tweak thrown ring colours.
* Make Armageddon shield loop properly.
* Tweak drowning numbers to be consistent between third and first person.

* Prevent ANY input when blindfolded.
* Make CECHOs always perplayer'd. (A little hacky; quads will need work here.)
* Make NiGHTS link timer bounces not a mess, and only when the colour changes.

I don't fully understand this, but it's what software does and it fixes the issue of the lighting in DSZ3. Also don't need the extra call to R_Prep3DFloors.

Signed-off-by: Nevur <apophycens@gmail.com>

* cv_powerupdisplay. Never, First-person only (default), Always.
* New monitor stuff.
* Fixed hitmessages.
* Some CTF stuff.
* Aaaaugh it's a lot I hate myself I need to work on my coursework.
* I'll figure out what I did here in the merge request when that's done.

# Conflicts:
#	src/d_main.c
#	src/st_stuff.c

I don't think it does anything for us anymore, and might even break things with slopes.
Someone let me know if I'm wrong and am breaking things horribly here.

Transformation based on screen space would make sense if we didn't want anything in the world to effect the sprites.
This should allow sprite splitting and sorting of sprites with level geometry easier.
stransform is no longer needed.

* Make TIME part of HUD count down in a bunch of circumstances where it was otherwise some other seperate thing.
* Make race countdown happen in a bunch of appropriate circumstances.
* Refactor race countdown.
* Remove a lot of useless stuff from H&S/Tag UI.
* Make co-op/competition/race end-of-act countdown use the race countdown and bigger HUD font.
* Remove useless PLAYING/SPECTATE text from lives element.
* Merge lap counter into lives element.
* Move some other text around.

* Remove deprecated P_Random() from Lua.

Solid walls *can* be cut
Fix issues with water and fog FOFs not cutting each other out correctly
Fix Fog colourmap and lighting setting that is done here.
Remove HWR_SplitFog

There is currently a bug with FF_DOUBLESHADOW (that also exists in software) but has a larger impact here. When 2 FF_DOUBLESHADOW lights are directly stacked on each other the bottom one has its height set incorrectly. This causes all the Fog in the timed gravity flipping section of ERZ2 to be drawn and it looks really bad.

* Clean up a lot of NiGHTS stuff still using the old, shitty NOSCALESTART offsetting in nonstandard resolutions.
* Clean up the ST_ drawing macro list.

* Fix Old Special Stage offsets.
* Fix drowning number offsets.
* Remove useless "WS" macros.

This reverts commit 121fcd83.

The reason I am reverting this is because the last commit actually fixes the *old* screenshot functionality, as the screen is being drawn back onto the buffer after they're swapped in the "real" size. Meaning the old function actually works perfectly fine now.

Only applies when the monitor aspect ratio is different to the game's aspect ratio.