am 4599c1ff: Merge change 23892 into eclair

Merge commit '4599c1ff56b1962eecfe647da26e922c0fe2fa13' into eclair-plus-aosp

* commit '4599c1ff56b1962eecfe647da26e922c0fe2fa13':
  android_atomic_write() implementation was using cmpxchg which was useless