hypertable recent version prototyping includes bool verify in length and read functions

Signed-off-by: Jordi Llonch <llonchj@gmail.com>
Use mon_host instead of mon_addr in ceph_conf

Signed-off-by: Jordi Llonch <llonchj@gmail.com>
Merge pull request #429 from llonchj/hypertable_changes

Hypertable changes