RFR: 8253253: Binutils tar ball extension update to gz

[Erik Joelsson]

On Wed, 16 Sep 2020 17:32:22 GMT, Junyuan Zheng <github.com+53073448+junyzheng at openjdk.org> wrote:

>> Marked as reviewed by erikj (Reviewer).
>
> We only use the GCC 4.9.2 for jdk8u. The openjdk/jdk repository's devkit contains all devkits that support older jdk.
> So we can just use this file to build all the devkits instead of pulling devkits from jdk8u and jdk11u. I also notice
> newer code always contains devkit from older code. jdk contains (gcc 9, 7, 8 4), jdk11u contains (gcc 7, 4), and jdk8u
> contains (gcc 4). But I will abandon this PR and change our workflow if outdated devkit will be eventually removed from
> openjdk/jdk repository.

Ah, I see. I would say that the intention is not to keep the latest mainline devkit generation scripts updated to
support all older update releases, but I can see how it could look that way given how we have so far not really deleted
older configs.

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PR: https://git.openjdk.java.net/jdk/pull/162