hard code freeze break request for gnome-clocks

[Matthias Clasen <matthias clasen gmail com>]

GNOME clocks is one of the applications affected by a change in how
GTK+ handles window sizes. The change was necessary to provide a
consistent CSD story, and many applications have been updated to the
new guidance in

https://wiki.gnome.org/HowDoI/SaveWindowState

I've added a patch to do so for gnome-clocks in

https://bugzilla.gnome.org/show_bug.cgi?id=763381

Without the patch, the clocks window gets bigger every time you reopen it.