Fix bpttool bug that prevents disabling A/B through stacking am: 99d3ca5673 am: a230e6a66c
am: fa298f1003

Change-Id: Ieba50293ec04622af754ef5e9801a56f43dc6dab
tree: 4485fabb1177735403fa11d9d69539aaefb97fa7
  1. Android.mk
  2. README
  3. bpt_test
  4. bpt_unittest.py
  5. bpttool
  6. test/