python-packages: Add package for ecdsa library.

This is needed for the latest Paramiko release, which includes support
for ECDSA keys using this library.

I'm using ECDSA in the description itself, because the name also
reflects the functionality and "cryptographic signature library" would
sound odd in this case.

Also, I'm adding myself to maintainers, because I'm going to take over
maintenance for Paramiko as well.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
python-paramiko: Update to new version 1.12.0.

A small summary of the changes:

 - Add tentative support for ECDSA keys.
 - Add server-side support for the SSH protocol's 'env' command.

The full change log can be found at:

https://github.com/aszlig/paramiko/blob/master/NEWS

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
python-paramiko: Add patch for ECDSA private keys.

This patch should be backwards-incompatible and is also submitted
upstream as paramiko/paramiko#218.

The main reason for this patch is that we need it for NixOS/nixops#124
in order to cope with NixOS/nixops@a2718b6, which makes ECDSA private
key the default for new deployments.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
python-paramiko: Update and clean up meta.

The upstream package has a new maintainer (Jeff Forcier) and thus the
main homepage for the project is the GitHub page.

Also the long description contains quite a lot of unrelevant
information, so I've used the one from PyPI, which is a lot smaller and
just contains what the library supports and does.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
python-paramiko: Add myself to maintainers.

And as promised, I'm going to keep an eye (or even two) on this :-)

Signed-off-by: aszlig <aszlig@redmoonstudios.org>