Bug#1120839: Crypto Credentials Passthrough

[Barak A. Pearlmutter]

Version 3.6.0.3-1 still has an issue with credentials being passed
through to gpg. I generated a package 3.6.0.3-1.1 in
https://github.com/barak/duplicity branch debian commit e838d638 which
includes post-3.6.0.3 development, in particular commit ac163d5e which
fixes the problem. It also has a few other minor tweaks, like an
updated debian/watch file.