Revert "Qt Designer: Fix scrolling of widget box."

This reverts commit 082efca145630db2d660d7241f7ae78d80f27e44.

Following the revert of 934f06220391eb0e0ebf66a2eb037f48adb4c43c
in qtbase.

Task-number: QTBUG-34953
Task-number: QTBUG-33906
Change-Id: Ib839ef4a3b43e136ab1ff298606d5b2945b2a51b
Reviewed-by: Thorbjørn Lindeijer <bjorn@lindeijer.nl>
Reviewed-by: Thorbjørn Lund Martsum <tmartsum@gmail.com>
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
Merge remote-tracking branch 'origin/release' into stable

Change-Id: I93127fc2b9963d0fec1ca7180cfa2c110bf3d27d
Merge remote-tracking branch 'origin/stable' into dev

Change-Id: I970feea253fde4e03bb7a62583080402b2043189
Simplify logic for C++ exception support

exception.prf takes care of all of this.

Change-Id: I6d8ba116a425eecf94557bdd682ca58905e6263a
Reviewed-by: Karsten Heimrich <karsten.heimrich@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Replace win32-g++ with mingw scope

Commit 773dd01 in qtbase introduced a general mingw platform scope, which
is cleaner and more flexible than matching the spec name.

(see 278152fff for a similar commit in qtbase).

Change-Id: Ia374dd565469750efed2b537e48c651fc3af8cb5
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Karsten Heimrich <karsten.heimrich@digia.com>
Compile fix for WinRT

Change-Id: I836f33a231764efc341db4b35fbed46c94d92df0
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Merge "Merge remote-tracking branch 'origin/stable' into dev" into refs/staging/dev