am 7fa9afed: am 3ccdf0bb: am c3e314a9: Merge changes Ie4b641cd,I5502b71d,I68086ce4

* commit '7fa9afedc1b8cd1d2c5f01693b8ae50c6c212e6d':
  libion: add apache license header to ion_test.c
  libion: initial unit tests
  libion: update ion_test.h