am 1f29d2c3: Merge "Switch the required host Java environment to 1.6." into kraken

Merge commit '1f29d2c376295cb7ba909ae2beb4904099546e89' into gingerbread

* commit '1f29d2c376295cb7ba909ae2beb4904099546e89':
  Switch the required host Java environment to 1.6.