When a commit is signed and the git config contains the setting
log.ShowSignature=True, even the "--oneline" git log output for it will
include multiple lines (the output from gpg verifying the signature),
thus fooling us into assuming that multiple commits are to be submitted.
Override the option to make sure we always get one line per commit only.
Signed-off-by: Dr. Jens Harbott <harbott@osism.tech>
Change-Id: Id4528209f1cd500afd06e2e61eb5689022251118
053b629472