Bugfix QDesktopServices on Windows

It was doing tricks with URLs that it shouldn't be doing... including
running QDir::toNativeSeparators on a URL.

Task-number: QTBUG-32311
Change-Id: I5b6f640919956998c00dcf507f931045f21a9e53
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Test password mask delay and characters on Mac.

Task-number: QTBUG-31498

Change-Id: Iab4a56b94364e3db78070aca40c629f9398ffbb7
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>
QDir::mkpath shouldn't fail if parent directory denies access

The fix for QTBUG-30046 introduced this regression on Windows, which
meant that it became impossible to create a directory anywhere under
c:\Users for example, because each user only has permission to see
his own directory.

Task-number: QTBUG-32314
Change-Id: I1b35433265934d4978d4b0c23a946c3f920c710d
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Fix typo in setGraphicsEffect() occurrences.

Change-Id: Iaca926ab47670616b55b0ab7ab735710237a5df8
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
Stabilize tst_qguiapplication.

Introduce QScopedPointer for windows or instantiate them on the
stack to prevent leaks. Tile all windows within virtual
screen to ensure they don't influence each other and are not
in the taskbar area.
Move cursor away from windows in modalWindow-test.

Change-Id: I40343e9f72263e22bdf2560448d7efcc915d17cb
Reviewed-by: Jan Arve Sæther <jan-arve.saether@digia.com>