[winswitch] xpra 0.14.6 traps on Ubuntu 12.04

[Antoine Martin]

>>  When I attempt to connect to my server
>> (already running 0.14.6 on Ubuntu 14.04) the client traps:
>>
>> $ xpra attach ssh:reorx:1
>> 2014-09-12 08:58:36,750 buggy Ubuntu swscale version detected: (2, 1, 0)
>> 2014-09-12 08:58:36,750 cowardly refusing to use it to avoid problems, set
>> the environment variable:
>> 2014-09-12 08:58:36,750 XPRA_FORCE_SWSCALE=1
>> 2014-09-12 08:58:36,750 to use it anyway, at your own risk
>> 2014-09-12 08:58:36,751  cannot import csc_swscale (swscale colorspace
>> conversion): unsupported Ubuntu swscale version: (2, 1, 0)
>> Segmentation fault (core dumped)
(..)
> But there is one thing: these newer builds were made with the new Cython
> 0.21 (released 2 days ago) instead of Cython 0.20.2 which was used
> previously.
This has been confirmed as a Cython 0.21 bug which I have reported upstream.
The xpra fix is very simple:
http://xpra.org/trac/changeset/7590/xpra
And I've pushed updated Ubuntu 12.04 packages to the repository.
Ubuntu 12.04 was the only platform affected.

Cheers
Antoine