Clean up the SFNT_Interface.  In this final pass, `load_hmtx' is
splitted from `load_hhea'.

* include/freetype/internal/sfnt.h, src/sfnt/sfdriver.c,
src/sfnt/ttmtx.c, src/sfnt/ttmtx.h: Split `hmtx' from `hhea'.

* src/sfnt/sfobjs.c (sfnt_load_face): Update.
6 files changed