tree 8c269348a47c58bc35d004ce924ea417864e6300
parent 0ac1cbaa76f1ab88ed575b197b06d042e015c10e
author Doug Zongker <dougz@android.com> 1393286570 -0800
committer Doug Zongker <dougz@android.com> 1393286570 -0800

support don't-care maps when writing the system image

Make package_extract_file() take an optional third argument which is
the pathname (in the package zip) of a map of don't-care regions to
skip over when writing the file.

Modify syspatch() to take source and target don't-care maps and use
them when patching the system partition.

Add the wipe_block_device() function to do a discard of all data on
the partition.

Change-Id: I8c856054edfb6aab2f3e5177f16d9d78add20be4