Windows: Fix broken debug statement in qwindowsglcontext.cpp.

Change-Id: Ifb26a7bb4461a88831459a17092944b068842d3e
Reviewed-by: Kai Koehne <kai.koehne@digia.com>
Fixed initialization of QPrintPreviewDialog's image resources for static builds.

[ChangeLog][QtPrintSupport][QPrintPreviewDialog] Fixed initialization of QPrintPreviewDialog's image resources for static builds.

Task-number: QTBUG-36561

Change-Id: Ibb725e7d0cd647b904371db2601161c756b99f53
Reviewed-by: Andy Shaw <andy.shaw@digia.com>
widgets/mainwindows/mainwindow example: Use mouse release event for dock title.

Task-number: QTBUG-36364

Change-Id: Ie3352c8e72a636aee2099ca3138eb0ac77425e7e
Reviewed-by: Topi Reiniö <topi.reinio@digia.com>