Add full version info (with build number) to RELEASE file

[tushev]

Hello,

It turns out that release file at the root of the installation lacks build number info.

Currently we have only Major.Minor.Security, and not +Build, although +Build can be important (adoptium/adoptium-support#163).

For instance, if I want to determine full release version, like 11.0.8+10, I currently have to query windows registry to get that '+10' (in case of windows) or run java -version and parse its output (which is kinda slow if I'm going multiple installations) in case installation was extracted from ZIP, and not MSI.

I suggest adding something like SEMVER = "11.0.8+10" to release file so It will be possible to get all version info from there.

Additionally, it would be great to have something about hotspot/openj9 (and openj9 heap size) in release as well without having to dig through the filesystem (adoptium/adoptium-support#153).

[austin0]

The contents of the release file is almost entirely decided within the OpenJDK being built, this is why jdk8u/11u+ differ greatly in their contents, so adding new values might not be as clean as initially expected.

Currently --with-vendor-version-string / IMPLEMENTOR_VERSION is set to always be AdoptOpenJDK and could be easily changed to contain the full version+build number. However, this parameter only exists for jdk9+ so jdk8u would still need a separate patch.

Solution following this is to add a new section to the build scripts that adds values to the release file, this way adoptium/adoptium-support#153, adoptium/adoptium-support#163, and any future requests could be accommodated. Tagging @sxa on if this is a good/bad idea and for any info on why --with-vendor-version-string is set to a static AdoptOpenJDK.

[austin0]

Closing as #2049 has been merged.