RFR: 8253034: Update symbol generation to accomodate Git as the SCM

[Joe Darcy]

On Tue, 15 Sep 2020 13:45:40 GMT, Erik Helin <ehelin at openjdk.org> wrote:

>> make/scripts/generate-symbol-data.sh line 66:
>> 
>>> 64: fi;
>>> 65:
>>> 66: if [ "`git status -s .`x" != "x" ] ; then
>> 
>> Just a suggestion: perhaps you want to use the porcelain format here instead of short?
>> https://git-scm.com/docs/git-status#Documentation/git-status.txt---porcelainltversiongt
>
> I agree with @adityamandaleeka, please use `git status --porcelain=v1`. See the git status
> [documentation](https://git-scm.com/docs/git-status#_porcelain_format_version_1) for the specification for the output.

@adityamandaleeka and @edvbld, thanks for the suggestion; I'll update the patch accordingly.

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

PR: https://git.openjdk.java.net/jdk/pull/161