Cleaned bunch of stuff. Only the actual data transmission is left to do.
Merge branch 'master' of https://github.com/irungentoo/ProjectTox-Core
Lossless UDP now works.

The testclient and testserver simulate a packet loss of 33%.

The only thing left to do in lossless UDP is the flow control (automatic
adjustment of the data send rate) which is only needed to transfer large
amounts of data.