* `SPR2_NTAG` last vestiges removal.
    * Removed need for `getskinfromdescription()` by calculating it once, at Menu load, and storing in `description_t`.
    * Fixed nametag colour issues.
    * Support widescreen with nametags.

* Fix a metric SHITTON of compiler errors.
    * Redefining `x` and `y` within scope of previous `x` and `y` (`M_DrawSetupChoosePlayerMenu`)
    * GCC straight up will not let you cast a `const char*` to a `char` (`V_DrawNameTag`)
    * Redefining `lines` within the scope of the global.
    * Redefining `string` within the function-specific `string`.
    * It would be recommended for y'alls to turn ERRORMODE on!

* Show emblem requirement on record attack menu
* Use bigger emblems on the menu.
* Display your best number of collected rings in yellow if reached perfect bonus.
* Adjusted XTRA frames (again)

Show emblem requirements.

Committed because I need sleep...

Fix reverse gravity cacti (and all other A_ConnectToGround stuffs)

See merge request STJr/SRB2Internal!378

Fixed NiGHTS spawnpoint angle camera jump fuckups

See merge request STJr/SRB2Internal!376

Hide NiGHTS grade in singleplayer if ranking is below GRADE_A

Closes #250

See merge request STJr/SRB2Internal!377

(Resolves #250)

Make ACZ3 Boss damage while bouncing more lenient

See merge request STJr/SRB2Internal!375

Add scroll-wheel weapon changing to default controls

Closes #248

See merge request STJr/SRB2Internal!374

Fix bogus "requested skin not found!" print

Closes #247

See merge request STJr/SRB2Internal!373

Fix for A_ConnectToGround on gravflipped objects

See merge request STJr/SRB2Internal!372

Kart-port bugfixes (round 1)

See merge request STJr/SRB2Internal!371

Fix condition which was MEANT to allow attacking Fangboss from the side while bouncing, but instead made it extremely difficult to pull off.

(resolves #248)

Also, since I'm less paranoid now - readd the skin number to its print.

On the recommendation of Sryder, revert everything relating to the `cpusleep` changes except for the new default value of 1.

Mixed declaration + out-of-bounds GCC error fixes for OpenMPT fixes (can't believe I didn't catch the former earlier)

* Default to 1, which means potential for a 1-frame loss every once in a while but no longer a complete cpu hog
* New minimum is 0, since -1 just did the exact same thing as 0 except slightly more optimized.

OpenGL sky dome

See merge request STJr/SRB2Internal!350