uapi: libct -- Add missing arguments name

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
docs: Add building of manpages in pfd format

Note it requires dblatex package to be installed.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
docs: Add libct documentation

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>