Freeze break request for mutter

[Florian Müllner <fmuellner gnome org>]

Hey,

I'd like to request (yet another) freeze break for mutter, namely the patch in
https://bugzilla.gnome.org/show_bug.cgi?id=771549.

It turns out that when moving cogl/clutter forks into the mutter codebase this cycle, we accidentally broke the text direction handling - that is, elements will always be laid out from left to right, even when using a script like Arabic or Hebrew where the opposite direction is expected.

That's because the default text direction is based on the translation of a "magic" string, and translations were dropped for the internal forks - luckily, GTK+ uses the same mechanism (and indeed, the same "magic" string), so we can just re-use GTK+'s translations to fix the text direction again, which is what the proposed patch does.

Cheers,

Florian