Redirect output to file ASAP, otherwise printf() calls might be missed.

Also removed the duraction reporter on add_zip_entry_from_fd -  since it
was spamming the report and the timing could be infered by calculating the
delta between each ALOGD entry anyways - and logged PID and statistics.

BUG: 26885492
Change-Id: Iadb00957daac68b7a40b0e36ee5cce2b82264588