Add -D option to restorecon for relabeling /data/data.

This depends on change I137588013ed1750315702c0dbe088ce3e4a29e83.

Change-Id: I5a4fef9affd6cddf98d72dc9d54899be25741779
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Merge "Add -D option to restorecon for relabeling /data/data." into kitkat