ActiveQt: Event loop is not started for in-process servers in static Qt builds.

If Qt is built statically and an application uses an ActiveQt server via QAxWidget, both ActiveQt server and the client application have their own QApplication. However, the event loop in the QApplication of ActiveQt server is not started properly, so the control is unresponsive to mouse and keyboard until something calls processEvents the first time.

The fix seems to be calling processEvents explicitly after the QApplication has been created in CreateInstanceHelper() in qaxserverbase.cpp.