[autofit] Add support for Chakma script.

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

* src/autofit/afscript.h: Add Chakma standard character.

* src/autofit/afranges.c, src/autofit/afstyles.h: Add Chakma data.
7 files changed