[jdk11u-dev] RFR: 8220093: Change to GCC 8.2 for building on Linux at Oracle [v2]

[Christoph Langer]

> This is a backport of [JDK-8220093](https://bugs.openjdk.org/browse/JDK-8220093). The motivation for doing it is that configure output will then show same output as in higher releases for the used linker. E.g.
> 
> `configure: Using gcc linker version 2.36.1 [GNU ld (GNU Binutils) 2.36.1]`
> 
> vs
> 
> `configure: Using gcc linker version 8.5.0 [collect2 version 8.5.0]`
> 
> One can then deduct the version of binutils used.
> 
> I had to make a few modifications. In toolchain.m4, [JDK-8257679](https://bugs.openjdk.org/browse/JDK-8257679) was already present so I had to make the hunk fit. The other adaptations are in jib-profiles.js which is not relevant to OpenJDK because it's used internally at Oracle only and some improvements to the devkit build scripts.

Christoph Langer has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge branch 'master' into 8220093
 - 8220093: Change to GCC 8.2 for building on Linux at Oracle
   
   Reviewed-by: tbell

-------------

Changes:
  - all: https://git.openjdk.org/jdk11u-dev/pull/1792/files
  - new: https://git.openjdk.org/jdk11u-dev/pull/1792/files/5c375ac1..284fdd82

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1792&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1792&range=00-01

  Stats: 147 lines in 6 files changed: 123 ins; 0 del; 24 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1792.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1792/head:pull/1792

PR: https://git.openjdk.org/jdk11u-dev/pull/1792