[11] Review request for 8191446: [Linux] Build and deliver the libav media stubs for openjfx build

[Kevin Rushforth]

Sure, I'll review/test it when I get a chance.

As a note to other reviewers, this patch adds a new "BUILD_LIBAV_STUBS" 
flag to build.gradle to support building the libav stubs in support of 
running on multiple Linux systems that may have different versions of 
libav. Currently we only build these stubs when doing a closed build for 
Oracle JDK. This patch moves this build logic into the open, and is the 
last major [1] piece of closed build logic preventing open and closed 
builds from being identical.

It would be helpful if someone outside Oracle could test this out on 
Linux and let us know whether it works for you.

Alexander: can you add the information about the new flags(s) to JBS?

Also, one thing I just thought of is that the new flag(s) could be added 
to gradle.properties.template for documentation.

Thanks.

-- Kevin

[1] there is still some cleanup that needs to be done, but this is the 
last big piece


Alexander Matveev wrote:
> Hi Kevin,
>
> Please review the following:
> https://bugs.openjdk.java.net/browse/JDK-8191446
>
> Added support for building libav stubs.
>
> Thanks,
> Alexander