RFR: JDK-8348597 : Update HarfBuzz to 10.4.0

[Harshitha Onkar]

Harfbuzz upgraded to v10.4.0

File changes -

**Newly added files**

libharfbuzz/OT/Var/VARC/VARC.hh
libharfbuzz/OT/Var/VARC/coord-setter.hh
libharfbuzz/hb-decycler.hh
libharfbuzz/hb-geometry.hh 
libharfbuzz/hb-ot-var-varc-table.hh 
libharfbuzz/hb-subset-instancer-iup.hh  
libharfbuzz/hb-subset-serialize.h


**Deleted**

libharfbuzz/OT/glyf/VarCompositeGlyph.hh
libharfbuzz/OT/glyf/coord-setter.hh


**Modified: 182 existing files modified**

To prevent build failures due to dangling pointer on linux it has been added to HARFBUZZ_DISABLED_WARNINGS_gcc in [ClientLibraries.gmk](https://github.com/openjdk/jdk/pull/23910/files#diff-cd8423c7b5d9fc65d6553ebfd4c3721218c74f9bdb6a1039cc4e6fee8267cd13)

-------------

Commit messages:
 - md file updated
 - md file updated
 - md file updated to 10.4.0
 - v10.3.0 to v10.4.0 changes
 - whitespace fix
 - warning section updated in gmk
 - .md file changes
 - modified files
 - newly added files
 - deleted files

Changes: https://git.openjdk.org/jdk/pull/23910/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=23910&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8348597
  Stats: 18558 lines in 193 files changed: 10013 ins; 2990 del; 5555 mod
  Patch: https://git.openjdk.org/jdk/pull/23910.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23910/head:pull/23910

PR: https://git.openjdk.org/jdk/pull/23910