[PATCH] git manpage: note git-security@googlegroups.com

Add a mention of the security mailing list to the "Reporting Bugs"
section. There's a mention of this list at
https://git-scm.com/community but none in git.git itself.

The copy is pasted from the git-scm.com website. Let's use the same
wording in both places.

Signed-off-by: Ævar Arnfjörð Bjarmason <redacted>
---
Someone at Git Merge mentioned that our own docs have no mention of
how to report security issues. Perhaps this should be in
SubmittingPatches too, but I couldn't figure out how that magical
footnote format works.

 Documentation/git.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/git.txt b/Documentation/git.txt
index 8163b5796b..4767860e72 100644
--- a/Documentation/git.txt
+++ b/Documentation/git.txt

@@ -849,6 +849,9 @@ Report bugs to the Git mailing list <git@vger.kernel.org> where the
 development and maintenance is primarily done.  You do not have to be
 subscribed to the list to send a message there.
 
+Issues which are security relevant should be disclosed privately to
+the Git Security mailing list <git-security@googlegroups.com>.
+
 SEE ALSO
 --------
 linkgit:gittutorial[7], linkgit:gittutorial-2[7],

-- 
2.15.1.424.g9478a66081