am 7f51bfee: Merge change I86898f45 into eclair

Merge commit '7f51bfee5fc5fb34fe89f3d74f7fd40d834c0fc2' into eclair-plus-aosp

* commit '7f51bfee5fc5fb34fe89f3d74f7fd40d834c0fc2':
  Fix BigInteger math bugs.