[jdk8u-dev] Integrated: 8305815: Update Libpng to 1.6.39

[Martin Balao]

On Thu, 14 Sep 2023 20:44:35 GMT, Martin Balao <mbalao at openjdk.org> wrote:

> Hi all,
> 
> This pull request contains a backport of commit [c1f759e9d01d646eac69442452151b0467eab306](https://github.com/openjdk/jdk11u-dev/commit/c1f759e9d01d646eac69442452151b0467eab306) from the [openjdk/jdk11u-dev](https://github.com/openjdk/jdk11u-dev) repository.
> 
> This backport is a follow up fix of [JDK-8295685](https://bugs.openjdk.org/browse/JDK-8295685).
> 
> This backport applied cleanly, except for the changes to the THIRD_PARTY_README files that are specific to 8u.
> 
> Thanks!

This pull request has now been integrated.

Changeset: f4260a4d
Author:    Martin Balao <mbalao at openjdk.org>
URL:       https://git.openjdk.org/jdk8u-dev/commit/f4260a4deed5210fc56f08774e8ca50cf6f7cc8e
Stats:     129 lines in 17 files changed: 29 ins; 8 del; 92 mod

8305815: Update Libpng to 1.6.39

Reviewed-by: phh, andrew
Backport-of: c1f759e9d01d646eac69442452151b0467eab306

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PR: https://git.openjdk.org/jdk8u-dev/pull/373