RFR: 8255566: Initialize JDK_Version direct from the build system

[David Holmes]

On Fri, 30 Apr 2021 09:19:57 GMT, David Holmes <dholmes at openjdk.org> wrote:

> The existing logic does:
> 
> build system -> java.lang.VersionProps -> VM thread.cpp fixed-size static buffers -> JDK_Version class
> 
> we can simply do:
> 
> build system -> JDK_Version class
> 
> reduces footprint, loc and startup time.
> 
> Testing tiers 1-3 and manual visual inspection of version strings
> 
> Thanks,
> David

I missed the fact that the VENDOR_VERSION and VENDOR_URL_VM_BUG values can be set programmatically by the jlink plugin, and so are different from the configure-time values. The VM has to continue to read those from VersionProps.

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PR: https://git.openjdk.java.net/jdk/pull/3812