use XCB_CURRENT_TIME for NET::TakeFocusProtocol
Review Request #126753 - Created Jan. 15, 2016 and submitted
The only clients that really seem to rely on it are Java and they're apparently "broken", resp. extremely picky on the tiemstamp and probably happily refuse focus if it's not equal to the current server time (ie. anything else happens at this moment) and overmore feel oblieged to act as WM by juggling around VDs at all.