version requirement request: libxklavier 5.1

[Sergey Udaltsov <sergey udaltsov gmail com>]

Hi folks

Retrospectively I am asking (or rather informing) that new kbd layout
dialog, recently designed here:
http://live.gnome.org/Design/SystemSettings/RegionAndLanguage
required some changes in libxklavier API. So the minimum version will
be 5.1 (not yet released, to be released ASAP).

For a moment, jhbuild is fixed (thanks to Luka Ferretti) to use
libxklavier from CVS

Sergey