Netquake DM request - translate jump to swim up in water

[Xylemon]

https://sourceforge.net/p/fteqw/tickets/46/

killingtime187 wrote on 2017-05-12:

This is standard all current netquake dm clients.

The source from proquake and qrack is:

-snip-

[Xylemon]

I have removed the code as it was posted without license and proper credit. Plus, I don't think we really need to copy code for something this simple.