Log Message:
Update chat/gajim to 0.15.

pkgsrc changes:
---------------
- Add a patch to fix CVE-2012-2093, taken from upstream repository.
- s/py-amkCrypto/py-crypto (py-amkCrypto is not maintained anymore upstream)

upstream changes:
-----------------

Gajim 0.15 (18 March 2012)

* Plugin system
* Whiteboard (via a plugin)
* Message archiving
* Stream managment
* IBB
* Nested roster group
* Roster filtrering
* UPower support
* GPG support for windows
* Spell checking support for windows

Gajim 0.14.4 (22 July 2011)

* Fix translation issue
* other minor fixes

Gajim 0.14.3 (19 June 2011)

* Fix history viewer
* Fix closing roster window
* Prevent some erros with metacontacts

Gajim 0.14.2 (07 June 2011)

* Fix CPU usage when testing file transfer proxies
* Fix invalid XML char regex
* Fix subscription request window handling
* Fix URL display in chat message banner
* Other minor bugfixes