am a37550ed: Merge "Use prebuilt flex."
am a37550ed: Merge "Use prebuilt flex."

* commit 'a37550edd39b3520839251b2a4acceca779a8a8b':
  Use prebuilt flex.

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