Giving MCServer a version number

[worktycho]

We use the testing branch to avoid feature freezes. Effectively the testing branch is on a release freeze that lasts a release cycle. At the moment the release cycle is based on how long does it take to stabilize a release.

[worktycho]

It looks like stable releases are going to be put off indefinitely until we can fix the ball of mud that is cClientHandle/cPlayer/cEntity lifetimes. Too many crashing bugs.

[tonibm19]

I hope we geet an stable version sooner than later.