On a device where we can't BLKSECDISCARD sectors, we "overwrite" them
with zeroes. This changes the FTL to remap those sectors to new
locations. With this done, the old contents are accessible only given
a compromise of flash firmware or a die level attack.
Bug: 26021231
Change-Id: Ia065921389886fac1ba456c19c138187237c2561
Much nicer C++ style logging, but the main reason is to clean up
AutoCloseFD.h so I don't have to use cutils to use it.
Change-Id: I7a7f227508418046eecce6c89f813bd8854f448a