external dependency libxklavier: request to bump the version

[Sergey Udaltsov <sergey udaltsov gmail com>]

Hi folks

Is there anyone objecting to bump the required version of libxklavier
to 4.0 (to be released this week or so)? The new version is going to
support new feature of xkeyboard-config - "exotic"/extra layouts (see
http://bugs.freedesktop.org/show_bug.cgi?id=21466). This caused some
changes in API (can provide with more details, if someone needs).

I will make sure libgnomekbd, gnome-control-center and
gnome-settings-daemon are modified accordingly.

Cheers,

Sergey