RFR: JDK-8288094: cleanup old _MSC_VER handling

Fri Jun 10 20:16:05 UTC 2022

On Thu, 9 Jun 2022 11:37:21 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> We still handle at a number of places ancient historic _MSC_VER versions of Visual Studio releases e.g. pre VS2013 (VS2013 has _MSC_VER 1800).
> This should be cleaned up, as long as it is not 3rd party code that we don't want to adjust.
> 
> Currently still supported ("valid") VS version are 2017+, see https://github.com/openjdk/jdk/blob/master/make/autoconf/toolchain_microsoft.m4 .
> VALID_VS_VERSIONS="2019 2017 2022"
> Even with adjusted toolchain m4 files, something older than VS2013 (also probably older than VS2015) would not be able to build jdk anymore.

Looks good to me.

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Marked as reviewed by clanger (Reviewer).

PR: https://git.openjdk.org/jdk/pull/9105