[8u] RFR: 8202822: Add .git to .hgignore

[Severin Gehwolf]

Re-send. Hopefully it'll reach the mailing list this time around
(supposedly there was an outage).

On Thu, 2021-12-09 at 17:26 +0100, Severin Gehwolf wrote:
> Hi,
> 
> With the Git mirrors now live, lets add .git to th HG's ignore file.
> Trivial patch, which didn't apply cleanly due to context differences.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8202822
> webrev: https://cr.openjdk.java.net/~sgehwolf/webrevs/JDK-8202822/01/webrev/
> 
> Thoughts?
> 
> Thanks,
> Severin