[jdk8u-dev] RFR: 8253424: Add support for running pre-submit testing using GitHub Actions [v3]

[Andrew John Hughes]

> Initial attempt to backport https://github.com/openjdk/jdk11u-dev/commit/1faefed218051c324bdb5c7c10369050d6c9dd44
> 
> Changes so far:
> * `make/autoconf/version-numbers` -> `common/autoconf/version-numbers`
> * Fix version variables (`JDK_MAJOR_VERSION`, `JDK_MINOR_VERSION` and `JDK_MICRO_VERSION` in 8u)
> * Remove boot JDK for Linux (provided by build environment Ubuntu 20.04 in openjdk-8-jdk)
> * Replace `--with-version-opt` with `--with-user-release-suffix`
> * Drop `--enable-jtreg-failure-handler` (unsupported)
> * Move make targets to make invocation (`--with-default-make-target` not supported)

Andrew John Hughes has updated the pull request incrementally with one additional commit since the last revision:

  Replace --with-version-build with --with-build-number

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

Changes:
  - all: https://git.openjdk.java.net/jdk8u-dev/pull/3/files
  - new: https://git.openjdk.java.net/jdk8u-dev/pull/3/files/39c5d9ad..13d94420

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk8u-dev&pr=3&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk8u-dev&pr=3&range=01-02

  Stats: 5 lines in 1 file changed: 0 ins; 0 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk8u-dev/pull/3.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk8u-dev pull/3/head:pull/3

PR: https://git.openjdk.java.net/jdk8u-dev/pull/3