[Development] qtbase 5.9 is locked down for the time being

[Liang Qi]

qtbase 5.9 is unlocked now. I didn’t see flaky things happened since yesterday.

—Liang

> On 24 Oct 2017, at 13:32, Liang Qi <Liang.Qi at qt.io> wrote:
> 
> Hi, all,
> 
> Since Oct. 20, only one change landed in qtbase 5.9, https://codereview.qt-project.org/#/c/209093/
> 
> I will try to do manual stage in qtbase 5.9 to check whether it is because flakiness test or others.
> 
> —Liang