windows: make the shell command work again
windows: make the shell command work again

Starts a new window in the correct dir, with the PS1
set correctly and the PATH variables over the mingw ones.

nirbheek/cerbero,atsushieno/cerbero,GStreamer/cerbero,nirbheek/cerbero,atsushieno/cerbero,fluendo/cerbero,atsushieno/cerbero,fluendo/cerbero,GStreamer/cerbero,fluendo/cerbero,atsushieno/cerbero,fluendo/cerbero,fluendo/cerbero,nirbheek/cerbero,GStreamer/cerbero,atsushieno/cerbero,nirbheek/cerbero,GStreamer/cerbero,GStreamer/cerbero