[winswitch] xpra-0.9.0 RPM installation

[Antoine Martin]

(snip)
>> Another issue is that everytime I do an update the RPM overwrites my
>> custom site-wide configuration in /etc/xpra/xpra.conf. It should check
>> the existence of xpra.conf (which can be a regular file or, as is in my
>> case, a symbolic link) and leave it untouched, preferably saving the new
>> default configuration in a file such as xpra.conf.rpmorig.
> Isn't that rpm's responsability to manage how those are handled?
Sorry, I'm totally wrong on this. It looks like we should be using the
%config directive here and we don't. Will fix.

Cheers
Antoine