[winswitch] please conform to XDG Base directory specification; ~/.config/xpra/

[Thomas Koch]

Hi,

I'm continuing my exploration of xpra. It's wonderful so far. It would become 
even nicer, if you'd conform to the XDG Base Directory Specification[1][2]. 
That means the xpra config file would go to

~/.config/xpra/config

[1] http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
[2] https://wiki.debian.org/XDGBaseDirectorySpecification

Thank you!

Thomas Koch