added rule to make tgz tarball
added rule to make tgz tarball

sarbian/libsquish,nbtdev/libsquish,sarbian/libsquish,nbtdev/libsquish,Zaretto/libsquish,sarbian/libsquish,AmbBAI/libsquish,AmbBAI/libsquish,Zaretto/libsquish,wnoise/libsquish,nbtdev/libsquish,wnoise/libsquish,Zaretto/libsquish,wnoise/libsquish,AmbBAI/libsquish