Update security/py-paramiko to 1.9.0.

Fix a tyop in DESCR.

Upstream changes:
-----------------

v1.9.0 (6th Nov 2012)
---------------------

* #97 (with a little #93): Improve config parsing of `ProxyCommand` directives
  and provide a wrapper class to allow subprocess-driven proxy commands to be
  used as `sock=` arguments for `SSHClient.connect`.
* #77: Allow `SSHClient.connect()` to take an explicit `sock` parameter
  overriding creation of an internal, implicit socket object.
* Thanks in no particular order to Erwin Bolwidt, Oskari Saarenmaa, Steven
  Noonan, Vladimir Lazarenko, Lincoln de Sousa, Valentino Volonghi, Olle
  Lundberg, and Github user `@acrish` for the various and sundry patches
  leading to the above changes.

v1.8.1 (6th Nov 2012)
---------------------

* #90: Ensure that callbacks handed to `SFTPClient.get()` always fire at least
  once, even for zero-length files downloaded. Thanks to Github user `@enB` for
  the catch.
* #85: Paramiko's test suite overrides
  `unittest.TestCase.assertTrue/assertFalse` to provide these modern assertions
  to Python 2.2/2.3, which lacked them. However on newer Pythons such as 2.7,
  this now causes deprecation warnings. The overrides have been patched to only
  execute when necessary. Thanks to `@Arfrever` for catch & patch.

v1.8.0 (3rd Oct 2012)
---------------------

* #17 ('ssh' 28): Fix spurious `NoneType has no attribute 'error'` and similar
  exceptions that crop up on interpreter exit.
* 'ssh' 32: Raise a more useful error explaining which `known_hosts` key line was
  problematic, when encountering `binascii` issues decoding known host keys.
  Thanks to `@thomasvs` for catch & patch.
* 'ssh' 33: Bring `ssh_config` parsing more in line with OpenSSH spec, re: order of
  setting overrides by `Host` specifiers. Specifically, the overrides now go by
  file order instead of automatically sorting by `Host` value length. In
  addition, the first value found per config key (e.g. `Port`, `User` etc)
  wins, instead of the last. Thanks to Jan Brauer for the contribution.
* 'ssh' 36: Support new server two-factor authentication option
  (`RequiredAuthentications2`), at least re: combining key-based & password
  auth. Thanks to Github user `bninja`.
* 'ssh' 11: When raising an exception for hosts not listed in
  `known_hosts` (when `RejectPolicy` is in effect) the exception message was
  confusing/vague. This has been improved somewhat. Thanks to Cal Leeming for
  highlighting the issue.
* 'ssh' 40: Fixed up & expanded EINTR signal handling. Thanks to Douglas Turk.
* 'ssh' 15: Implemented parameter substitution in SSHConfig, matching the
  implementation of `ssh_config(5)`. Thanks to Olle Lundberg for the patch.
* 'ssh' 24: Switch some internal type checking to use `isinstance` to help prevent
  problems with client libraries using subclasses of builtin types. Thanks to
  Alex Morega for the patch.
* Fabric #562: Agent forwarding would error out (with `Authentication response
  too long`) or freeze, when more than one remote connection to the local agent
  was active at the same time. This has been fixed. Thanks to Steven McDonald
  for assisting in troubleshooting/patching, and to GitHub user `@lynxis` for
  providing the final version of the patch.
* 'ssh' 5: Moved a `fcntl` import closer to where it's used to help avoid
  `ImportError` problems on Windows platforms. Thanks to Jason Coombs for the
  catch + suggested fix.
* 'ssh' 4: Updated implementation of WinPageant integration to work on 64-bit
  Windows. Thanks again to Jason Coombs for the patch.
* Added an IO loop sleep() call to avoid needless CPU usage when agent
  forwarding is in use.
* Handful of internal tweaks to version number storage.
* Updated `setup.py` with `==dev` install URL for `pip` users.
* Updated `setup.py` to account for packaging problems in PyCrypto 2.4.0
* Added an extra `atfork()` call to help prevent spurious RNG errors when
  running under high parallel (multiprocess) load.
* Merge PR #28: https://github.com/paramiko/paramiko/pull/28 which adds a
  ssh-keygen like demo module. (Sofian Brabez)

v1.7.7.2 16may12
----------------
  * Merge pull request #63: https://github.com/paramiko/paramiko/pull/63 which
    fixes exceptions that occur when re-keying over fast connections. (Dwayne
    Litzenberger)

(gls)