8209115: adjust libsplashscreen linux ppc64le builds for easier libpng update

[GoeLin]

When trying to backport 8295685: Update Libpng to 1.6.38 " I found this is needed to make
it apply clean. All regular updates of png will profit from this.

---

Progress

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

Issue

• JDK-8209115: adjust libsplashscreen linux ppc64le builds for easier libpng update

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk11u-dev pull/1682/head:pull/1682
$ git checkout pull/1682

Update a local copy of the PR:
$ git checkout pull/1682
$ git pull https://git.openjdk.org/jdk11u-dev pull/1682/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 1682

View PR using the GUI difftool:
$ git pr show -t 1682

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk11u-dev/pull/1682.diff

[bridgekeeper]

👋 Welcome back goetz! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

@GoeLin This change now passes all automated pre-integration checks.

After integration, the commit message for the final commit will be:

8209115: adjust libsplashscreen linux ppc64le builds for easier libpng update

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[mlbridge]

Webrevs

• 00: Full (b99be8b3)

[GoeLin]

/integrate

[openjdk]

Going to push as commit e4fdd03.

[openjdk]

@GoeLin Pushed as commit e4fdd03.

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