When using QProcess::startDetached on Windows, a console Window is
visible. Since dbus-daemon should run silently in the background,
use our customized CProcess instead which supports starting without
console.
This commit also fixes a race condition. CDBusServer launched the
dbus-daemon and immediatly tried to register. If dbus-daemon was not yet
initialized and ready to accept connections, registering the service
failed. This is fixed by a small timeout.
refs #615
Everytime you connect to DBus, the connection stays open until it
is manually disconnected or cleaned up by the QCoreApplication
destructor. In case of xbus, ~QCoreApplication is not necessarily
be called and the connection not cleaned up. Hence do it manually.
refs #615
