harfbuzz: Update to version 4.4.1

harfbuzz: Update to version 4.4.1

- Update from version 4.2.0 to 4.4.1
- Update of rootfile
- Changelog
   Overview of changes leading to 4.4.1
	- Fix test failure with some compilers.
	- Fix Telugu and Kannada kerning regression.
   Overview of changes leading to 4.4.0
	- Caching of variable fonts shaping, in particular when using HarfBuzz’s own
	  font loading functions (ot). Bringing performance of variable shaping in par
	  with non-variable fonts shaping. (Behdad Esfahbod)
	- Caching of format 2 “Contextual Substitution” and “Chained Contexts
	  Substitution” lookups. Resulting in up to 20% speedup of lookup-heavy fonts
	  like Gulzar or Noto Nastaliq Urdu. (Behdad Esfahbod)
	- Improved ANSI output from hb-view. (Behdad Esfahbod)
	- Support for shaping legacy, pre-OpenType Windows 3.1-era, Arabic fonts that
	  relied on a fixed PUA encoding. (Khaled Hosny, Behdad Esfahbod)
	- Sinhala script is now shaped by the USE shaper instead of “indic” one.
	  (Behdad Esfahbod, David Corbett)
	- Thai shaper improvements. (David Corbett)
	- hb-ot-name API supports approximate BCP-47 language matching, for example
	  asking for “en_US” in a font that has only “en” names will return them.
	  (Behdad Esfahbod)
	- Optimized TrueType glyph shape loading. (Behdad Esfahbod)
	- Fix subsetting of HarfBuzz faces created via hb_face_create_for_tables().
	  (Garret Rieger)
	- Add 32 bit var store support to the subsetter. (Garret Rieger)
	- New API
	   +HB_BUFFER_FLAG_DEFINED
	   +HB_BUFFER_SERIALIZE_FLAG_DEFINED
	   +hb_font_changed()
	   +hb_font_get_serial()
	   +hb_ft_hb_font_changed()
	   +hb_set_hash()
	   +hb_map_copy()
	   +hb_map_hash()
   Overview of changes leading to 4.3.0
	- Major speed up in loading and subsetting fonts, especially in
	  handling CFF table. Subsetting some fonts is now 3 times faster.
	  (Behdad Esfahbod, Garret Rieger)
	- Speed up blending CFF2 table. (Behdad Esfahbod)
	- Speed up hb_ot_tags_from_language(). (Behdad Esfahbod, David Corbett)
	- Fix USE classification of U+10A38 to fix multiple marks on single Kharoshthi
	  base. (David Corbett)
	- Fix parsing of empty CFF Index. (Behdad Esfahbod)
	- Fix subsetting CPAL table with partial palette overlaps. (Garret Rieger)
	- New API
	   +hb_map_is_equal() (Behdad Esfahbod)
   Overview of changes leading to 4.2.1
	- Make sure hb_blob_create_from_file_or_fail() always returns nullptr in case
	  of failure and not empty blob sometimes. (Khaled Hosny)
	- Add --passthrough-tables option to hb-subset. (Cosimo Lupo)
	- Reinstate a pause after basic features in Khmer shaper, fixing a regression
	  introduced in previous release. (Behdad Esfahbod)
	- Better handling of Regional_Indicator when shaped with RTL-native scripts,
	  reverting earlier fix that caused regressions in AAT shaping. (Behdad Esfahbod)

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Reviewed-by: Peter Müller <peter.mueller@ipfire.org>