am 23ceeea8: make a copy of sideloaded packages in /tmp before verifying

Merge commit '23ceeea85e6a3555dd3d7140128e310954cadf7f' into gingerbread-plus-aosp

* commit '23ceeea85e6a3555dd3d7140128e310954cadf7f':
  make a copy of sideloaded packages in /tmp before verifying