am 4833d9f4: init: builtins: trancate target file in do_copy

Merge commit '4833d9f4986d6dafacff841beb3bf93172c84bdc' into eclair-plus-aosp

* commit '4833d9f4986d6dafacff841beb3bf93172c84bdc':
  init: builtins: trancate target file in do_copy