Simple Quake Launcher 2.5
Added handling for mods without map files. More specifically:
- Quake, Hexen 2: count folder as a mod if it (or PAK/PK3 files within it) contains progs.dat.
- Quake2: count folder as a mod if it contains a variant of gamex86.dll.
- Half-Life: count folder as a mod if it contains "cl_dlls\client.dll".