fix random crash while accessing arguments

  The problem is that QCoreAppliction changes these values in some cases.
  (Most often crash was when XCB was trying to get the qApp->arguments())

Change-Id: I41086f662dbead854864a29b2566355c6360b011
Reviewed-by: Kai Koehne <kai.koehne@digia.com>
Reviewed-by: Karsten Heimrich <karsten.heimrich@digia.com>
move the currentDateTime to the constructor

  It was crashing on Qt5 because the currentDateTime uses
  QLocal::system Q_GLOBAL_STATIC which could be already deleted.

Change-Id: I10ff1b02a72baccbe0acd2d0f54e187653abaa04
Reviewed-by: Niels Weber <niels.weber@digia.com>
fix that QSKIP has one argument since Qt 5

Change-Id: I134f61e1ea9a50264a155799d447965beaab14f9
Reviewed-by: Niels Weber <niels.weber@digia.com>
Reviewed-by: Karsten Heimrich <karsten.heimrich@digia.com>
Merge remote-tracking branch 'origin/1.5'

Change-Id: Ic9f2e152046b69e38f24b51f8d7c0dc4ce17d076