HICON should be destroyed by DestroyIcon

fix GDI object leaks at least on Win 8.1 x64

Task-number: QTBUG-40996
Change-Id: I9314486ab498a3f74c22deb6ca874ea6adc2e36c
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Bump version

Change-Id: I7928f347c8f9d73737aac90dc11c65d204d7a045
Fix errorMessageFromComError().

Task-number: QTBUG-41138
Change-Id: I86738bb2bdd1fb3064a7894922869bca2a1b4581
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Merge remote-tracking branch 'origin/5.3' into 5.4

Conflicts:
	.qmake.conf

Change-Id: Ie73d9a90731c6e884a03d1bb64aff5571659d45d
Fix for QWinThumbnailToolBar GDI leak

QTBUG-41635

Change-Id: I60e34c8f32df6fc7ff9eac2812f71d611b903f41
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Remove setting of the default identifier from QWinJumpList.

QWinJumpList does not work with a default-generated ID, this is
only useful when the ID is properly registered.

Task-number: QTBUG-41155
Change-Id: Ic0e0238fa3337d79ac7bc3d1efb314e1533355f2
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>