Depending on how gpg was built, it may issue the following
message to stderr when run:
Warning: using insecure memory!
When the test is collecting gpg output it is therefore not
enough to just match on a "gpg: " prefix it must also match
on a "Warning: " prefix wherever it needs to match lines
that have been produced by gpg.
Signed-off-by: Kyle J. McKay <mackyle@gmail.com> Acked-by: Michael J Gruber <git@drmicha.warpmail.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>