Merge changes Ibd2aebf9,Ice81d949

* changes:
  Remove mipsel-linux-android gcc-4.7 bins, libs, and includes
  add OWNERS for prebuilts/gcc/darwin-x86/mips/mipsel-linux-android-4.7
tree: afcbb319fc0f9bcca4e023ecb568fd0cf13095ea
  1. OWNERS