Add support for --keyring, --secret-keyring
Add support for --keyring, --secret-keyring

As requested in tracker #875367, support the --keyring and
--secret-keyring options of gpg.  Accept provided patch with
modification to apply against current code.

Reported-by: gian paolo ciceri <9441e8974f98a9cd5a38254689e5bb14a8ed6d04@gmail.com>
Signed-off-by: Kevin Locke <945d6ce1f492ca7aa6fe1cfbb97996334449d372@digitalenginesoftware.com>

kevinoid/py-gnupg