RFR: 8256722: handle VC++:1927 VS2019 in abstract_vm_version

[Aleksey Shipilev]

On Mon, 23 Nov 2020 07:19:45 GMT, Fairoz Matte <fmatte at openjdk.org> wrote:

> The C++ compiler handling coding in abstract_vm_version.cpp currently misses handling nicely for VC++:1927 VS2019.
> Source:
> https://en.wikipedia.org/wiki/Microsoft_Visual_C%2B%2B

This addition looks fine to me. I see that CDS generates the seed based on VM version strings, might be good to run at least `runtime/cds` tests.

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Marked as reviewed by shade (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/1377