Split to multiple bash commands.

This can fix the error "/bin/bash: Argument list too long", if we get a
really long apk list.
Bug tracker Link: http://code.google.com/p/android/issues/detail?id=38937

(cherry picked from commit d9a88d58)

Change-Id: I80cd07cf50cc2b04e4b6aa9d5ecb1faf80d4cb5c