For two reasons:
1. User can always call hb_buffer_pre_allocate() themselves, and
2. Now we do a pre_alloc in add_utfX anyway, so the total number of
reallocs is limited to a small number (~3) anyway. This just makes the
API cleaner.
Old HarfBuzz test suite always shaped as left-to-right and hence had wrong
0x14db, direction expected glyphstring for N'ko. Doh!
Failures down from 92 to 88.
Needs fonts to be put in test/fonts. Tests are skipped otherwise.
Run with --verbose for details. Working on improving the test runner
to make it easier to make sense of what's going on.
Behdad Esfahbod