am 52e19d59: Merge "Change the keep alive time for excess idle threads." into gingerbread

Merge commit '52e19d5917b8f057131c1dc8b3eb772febd791d9' into gingerbread-plus-aosp

* commit '52e19d5917b8f057131c1dc8b3eb772febd791d9':
  Change the keep alive time for excess idle threads.