am 9a24bc56: Implement compareStrictly() using phone_number_compare() written in C.

Merge commit '9a24bc563f28d8489c7178b93ff05f02e8b8a893' into eclair-plus-aosp

* commit '9a24bc563f28d8489c7178b93ff05f02e8b8a893':
  Implement compareStrictly() using phone_number_compare() written in C.