Minor
Add Myanmar test case from OpenType Myanmar spec
Remove old cruft
If HAVE_ICU_BUILTIN is defined, use hb-icu Unicode callbacks

Useful for Android / Chrome / etc when ICU is built in the same
library as harfbuzz itself.
[coretext] Add coretext_aat shaper

This is a higher-priority shaper than default shaper ("ot"), but
only picks up fonts that have AAT "morx"/"mort" table.

Note that for this to work the font face's get_table() implementation
should know how to return the full font blob.

Based on patch from Konstantin Ritt.
[coretext] Add hb_coretext_face_create()

Not tested.
wrap definition of free_langs() with HAVE_ATEXIT

...to avoid an unused function warning; see mozilla bug https://bugzilla.mozilla.org/show_bug.cgi?id=984081.
Don't use "register" storage class specifier

Fixes warnings.
https://bugzilla.mozilla.org/show_bug.cgi?id=984081
0.9.27
Another try to make gtk-doc optional
Yet another try to make build without gtk-doc succeed
Remove dead warning
[util] Plug minor leak
Fix build with --coretext on iOS

On iOS CoreText and CoreGraphics are stand-alone frameworks
One more fix for build without gtk-doc

Fixes https://github.com/behdad/harfbuzz/pull/35
Add "make built-sources"
Start fleshing out builtin font functions
Minor
Use __aarch64__ for 64-bit ARM detection, not __arm64__

Many GCC versions don't define __arm64__
[indic] Support U+17DD KHMER SIGN ATTHACAN

As requested by Martin Hosken on the list.