am 8e3a2cad: Document CDMA messageRef value.

Merge commit '8e3a2cad4ed875394c833124df98255b1fd18a77' into eclair-plus-aosp

* commit '8e3a2cad4ed875394c833124df98255b1fd18a77':
  Document CDMA messageRef value.
tree: 141f37252036d1e382da3b38679e7d680c4bcd87
  1. include/
  2. libril/
  3. reference-cdma-sms/
  4. reference-ril/
  5. rild/