GZDoom g4.4.1

added a CCMD that lists all CVARS which don't have a description.
mapped "Smooth mouse" back to m_filter CVAR and removed smooth_mouse.
Fix compilation on DragonFly BSD
fixed code that deternines when to upscale a texture.
fixed fallback lookup for multipatch textures referencing themselves as patch.
fixed the burn shader.
do not allow playing sounds during PlayerFinishLevel.
added 3 more texture samplers to the shaders to compensate for the now always occupied slots for brightmap, glow and detail.
fixed calculation of allocated memory for garbage collection
since we already got lots of CVAR descriptions from the menu's content, let's use that as CVAR description if none is explicitly provided.
fixed bad bit operations when calculating the base palette remap.
fixed: The mutipatch texture builder did not set the source lump.
fixed: When reopening a lump, the full file name must be used.
fixed crash with texture upscaling in the truecolor software renderer.
Fixed crash rendering 3D floors without ceiling or floor textures in software.
Fixed wrong MINDEMOVERSION which was committed in 95f4479
Fix Bag of Holding not increasing Firemace ammo capacity
fixed compilation of non-x86 targets