RFR: JDK-8301998: Update HarfBuzz to 7.0.1 [v2]

[Phil Race]

On Fri, 3 Mar 2023 20:25:09 GMT, Harshitha Onkar <honkar at openjdk.org> wrote:

>> HarfBuzz library updated from v4.4.1 to v7.0.1
>> 
>> - harfbuzz.md file updated
>> - Added -DHB_NO_VISIBILITY to HARFBUZZ_CFLAGS in Awt2DLibraries.gmk to avoid build issues on linux and macos targets.
>> - GPOS.hh has been moved from Layout to Layout/GPOS to match upstream changes.
>> - Total of 270 files changed out of which 46 are newly added.
>
> Harshitha Onkar has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Updating.txt changes

src/java.desktop/share/native/libharfbuzz/hb-icu.h line 1:

> 1: /*

We don't need/use hb-icu.h and hb-icu.cc, so why are they here ?
They were there in harfbuzz source for a long time and we've never needed them before and
given what their purpose is, I don't see why we need them now.
Are you sure you followed the process of adding in ONLY new files which were needed so that we successfully
compiler ?
Please double check ALL new files you added are really needed.

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PR: https://git.openjdk.org/jdk/pull/12864