[Fixed]: New test release, please test

[Fonte Boa]

I'm using Wings3d 2.1, 64 bits. No much time to test. Therefore i'll post the problems i found here and will number them for developers better control.

(1) In Tweak mode, during any command execution (Move, Scale, Relax, etc), when user hold [Alt] key and drag the mouse (this is to adjust Tweak Magnet Radius), there is no way to return to the command in execution after release that key. Wings remains in "Adjust Radius" command... A way to interrupt this is to release left mouse button and, as consequence, the command that was in execution (another way is to press the combo for that command again, but this workaround isnt possible when using the command associated to simple Move the mouse).

Congratulations for the hard work. It seems pretty stable here.