Not fully working over USB yet, there are some handshaking issues that need to be addressed. WLAN might be improved due to the -qmljsdebugger fixes, but not tested.
A copy of the client debugging code is made in src/libs/qmljsdebugclient/
(this comes from the qt code from commit 65642dd343bf61)
So the qmljsinspector plugin does not require anymore Qt private headers.
