8261169: Upgrade HarfBuzz to the latest 2.8.0

[prrace]

Upgrade harfbuzz to 2.8.0

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Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• Change must be properly reviewed

Issue

• JDK-8261169: Upgrade HarfBuzz to the latest 2.8.0

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk pull/3825/head:pull/3825
$ git checkout pull/3825

Update a local copy of the PR:
$ git checkout pull/3825
$ git pull https://git.openjdk.java.net/jdk pull/3825/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 3825

View PR using the GUI difftool:
$ git pr show -t 3825

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk/pull/3825.diff

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[openjdk]

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