[JENKINS-37430] Add support for ppc64le

[kuisathaverat]

JENKINS-37430

@reviewbybees
it adds support for Power8 platform, these are the commits related with the PR

jnr/jffi@7e22759
jnr/jnr-unixsocket@767ed30
jnr/jnr-ffi@6d8cdc0

[kuisathaverat]

@stephenc WDYT about this upgrade of plugins to support ppc64le

[stephenc]

Did you check if Jenkins has been updated to match?

This is somewhat similar to the bouncycastle issue

[kuisathaverat]

@stephenc in core there are a previous version of jnr-posix, I am going to review if it works without touch it in both sides.

<dependency>
      <groupId>com.github.jnr</groupId>
      <artifactId>jnr-posix</artifactId>
      <version>3.0.1</version>
</dependency>

[kuisathaverat]

@stephenc I tested that we can keep jnr-posix on same version of core

[kuisathaverat]

@reviewbybees Please, if someone can review it will be appreciated

[abayer]

🐝

[oleg-nenashev]

Would be nice to see the full list of changes in libs.
I suppose we pick much more than a particular fix. Regarding the custom build of 1.0.3.1-jenkins-20276, we should ensure that the all fixes from this custom build are integrated to the upstream

[jglick]

we should ensure that the all fixes from this custom build are integrated to the upstream

Right, I think that is the main task.

[kuisathaverat]

@jglick @oleg-nenashev AFAIT by the last comment in jnr/jnr-ffi#23, JENKINS-20276 it is not longer an issue on this library

[kuisathaverat]

@reviewbybees done