Fix #1177

Closes #1177

See merge request STJr/SRB2!2268

Fixes for !2190

See merge request STJr/SRB2!2273

Add v.getSectorColormap and P_GetSectorLightLevelAt

See merge request STJr/SRB2!2230

Improve addon download refusal messages

See merge request STJr/SRB2!2153

Ported skincolor cache management from the secondcolor branch
Adjusted R_GetTranslationRemap to use a similar caching scheme
Made sure that if a skincolor was updated, then related translations would be rebuilt

Delete 'translations' Lua global

Moved string conversion helpers into m_misc.c
Adapted parser to check for '"'
Check if tokenizer returned NULL

Capture '"' characters
Capture ';' tokens
Implement tracking of the current line

Add can_change for console variables

See merge request STJr/SRB2!2196

ZDoom translations

See merge request STJr/SRB2!2190

Fix IPv6 bans incorrectly banning IPv4 address

See merge request STJr/SRB2!2265

Draw Character in NiGHTS Attack

See merge request STJr/SRB2!2175

[OpenGL] Fix DSZ2 Wall Bruhs

See merge request STJr/SRB2!2264

Fix 3D floor side texture scale when there are multiple on the same line

See merge request STJr/SRB2!2262

Expose P_LineIsBlocking to Lua

See merge request STJr/SRB2!2150

Lua colorlib

See merge request STJr/SRB2!2094

Enable Pandora and Level Select with Devmode / Always allow Level Select if unlocked

See merge request STJr/SRB2!2066

Expose chat_on to Lua as chatactive

See merge request STJr/SRB2!2023

Sector portals

See merge request STJr/SRB2!2139

Fix roll braking assuming player angle is camera angle (resolves #1055)

Closes #1055

See merge request STJr/SRB2!2053

Drop Debian musl jobs

Conditional jump or move depends on uninitialised value(s)
strncpy (vg_replace_strmem.c:599)
MIT_SetCurBackground (m_menu.c:2650)
M_IterateMenuTree (m_menu.c:2581)
M_SetMenuCurBackground (m_menu.c:2790)
F_InitMenuPresValues (f_finale.c:2276)
D_StartTitle (d_main.c:998)
G_Responder (g_game.c:2117)
D_ProcessEvents (d_main.c:282)
Local_Maketic (d_clisrv.c:5297)
NetUpdate (d_clisrv.c:5701)
TryRunTics (d_clisrv.c:5371)
D_SRB2Loop (d_main.c:820)

doomdef.h: check if the build system already define our DEBUG code
version.mk: do not fail on our inline functions in DEBUGMODE
features.mk: we do not need the VALGRIND libraies, just the headers
mserv.c: start registered with false in Update_parameters()