fdisk: read topology info from libblkid

fdisk: read topology info from libblkid

and print ('p' command) info about logical and physical sectors and
alignment_offset.

minimum_io_size

  we don't use physical sector size directly, because on RAIDs is
  better to use minimum_io_size (aka stripe chunk size). For disk drives
  is minimum_io_size the same value as physical sector size.

alignment_offset

  For compatibility with legacy operating systems some vendors provide
  disks where logical and physical sectors are aligned at sector 63
  (= geometry.sectors). In other words the physical 4KB sectors
  start at LBA -1. Then the physical boundary is at:

                     alignment_offset + N * phy_sector_size

Signed-off-by: Karel Zak <kzak@redhat.com>