Log Message:
Updated kannel to 1.2.1

* bug fixes

* new features

* compatibility breakers:

  SMPP module users should note that the 'msg-id-type' default behaviour
  has changed. The SMPP spec says that msg ids should be C strings and
  hence we treat them as such per default. If your SMSC gives msg ids
  in submit_sm and deliver_dm PDUs in different numbering basing, then
  please use the 'msg-id-type' config directive to set it accordingly.