am 96d3c0d0: Merge "Update the build system doc"
am 96d3c0d0: Merge "Update the build system doc"

* commit '96d3c0d0b14e94583438d9e93f011b1b0c930e38':
  Update the build system doc

xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build