Check for admin role right in the sql statemenet

let's try to kill the thread right away and protect the thread variable with a mutex

added two security flags to windows linking

I see no reason why a visual effect needs Distance. IMO square should look just fine. Untested. Oh. Also reduced flake count at Randi's request.

New hwSqrt implementation which is 46/19 times faster than the old one!

CASE FOLDING!!! Never ever commit files with the same name and different casing

Reduce AI skills more on high Level values

fix for issue #599: "Change graphics size settings to use qspinbox"? somebody ask unC0Rr if that's what he wanted :p

implementation of a restart-game button. location and appearance is not final :P

whoops, unbreak build. how come that cmake doesn't stop anymore on engine build error?

This isn't necessary anymore

fix for issue #611: Engine crash in portal code

- Revert server workaround over desync from r98e2dbdda8c0 - Don't allow more than 48 hedgehogs

make cleaver icon hint at that fact that you have 2 of them