am 4309b52f: am 735de3b3: Hash keys with MD5; track IBinders not IInterface

Merge commit '4309b52fe19de5241113d8f9ebcdf52741e086a9'

* commit '4309b52fe19de5241113d8f9ebcdf52741e086a9':
  Hash keys with MD5; track IBinders not IInterface