[autofit] Add support for Georgian Mtavruli characters.

This will be part of the forthcoming Unicode 11.0.

* src/autofit/afblue.dat: Add blue zone data for Mtavruli.
* src/autofit/afblue.c, src/autofit/afblue.h: Regenerated.

* src/autofit/afscript.h: Add Mtavruli standard character.
5 files changed