Address "FIXME: must support non power of 2 chunk_size, dm-stripe.c does".

Bump target version to indicate change.
Signed-off-by: NHeinz Mauelshagen <heinzm@redhat.com>
Tested-by: NScott Bauer <Scott.Bauer@intel.com>
Reviewed-by: NScott Bauer <Scott.Bauer@intel.com>
Signed-off-by: NMike Snitzer <snitzer@redhat.com>