cfdisk: provide extra partinfo with "x"

cfdisk: provide extra partinfo with "x"

The new 'extra' info provides:

 * filesystem information from libblkid (TYPE, UUID, LABEL)

   This feature is based on libblkid ability to probe specified area
   on the device. It allows to probe for filesystems although the
   partition devices (e.g. /dev/sda2) does not exist. For example from
   disk image:

   	# cfdisk /home/archive/fs-images/disk.img

 * additional information from libfdisk (partition UUID, Name, ...)

 * mount information from libmount (from fstab or mountinfo)

Signed-off-by: Ondrej Oprala <ooprala@redhat.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
Co-Author: Karel Zak <kzak@redhat.com>