Fix QWinJumpList::isXxxCategoryShown property type

Change-Id: If369c00ffff2c3869a3b94372e9a568178870433
Reviewed-by: Caroline Chao <caroline.chao@digia.com>
QWinTaskbarButton: mark clearOverlayIcon() as reset func

Change-Id: Idddde210c88f2230dca3d6645ec9f4260b0d7908
Reviewed-by: Caroline Chao <caroline.chao@digia.com>