merge qstat.cfg from the XQF project

Hi, this is the modifications I made to `qstat.cfg` to add these games to [XQF](https://github.com/XQF/xqf):

* Et:Legacy (Wolf:ET fork)
* TremulousGPP (Tremulous fork, id Tech 3 derivative)
* TremFusion (Tremulous fork, id Tech 3 derivative)
* Unvanquished (Tremulous fork, id Tech 3 and XreaL derivative)
* Xonotic (Nexuiz fork, Id Tech 1 derivative - Darkplace)
* Jedi Knight 2 Outcast - patch by VictorBE
* Q3Rally (Car Racing Id Tech 3 mod become standalone)
* World of Padman (Colorful Id Tech 3 mod become standalone)
* Reaction (Action Id Tech 3 mod become standalone)
* Smokin' Guns (Western Id Tech 3 mod become standalone)
* ZEQ2 Lite (Dragon Ball Id Tech 3 mod become standalone)
* Turtle Arena (Ninja Turtles id Tech 3 derivative)
* Alien Arena (Extraterrestrial id Tech 2 derivative - CRX engine)

And there is some fixes for other games (default port for example).

Beware, there is one notable change, the tremulous support is now unified with other games, as `-tremulousm` and `-tremulouss` arguments and not `-tremulous` without the ending `s` for _server_.