Fixed some issues with large textures
Fixed textures of size
32768 trying to allocate way too much memory
Disallow loading of textures above 64k on any side (with a warning)
Added more info to "CFontTextureRegen: Failed to allocate X bytes" warning (and should also be less crash prone when it happens)
Simplify gmod_tool code
Call TOOL:ReleaseGhostEntity on holster even when TOOL:Holster doesn't
TGA loading: do not try to read data if overflowed
Simply displays better warning, it wasn't actually reading any data