If cppreopts.sh failed to copy files for some reason it would leave
the temporary files sitting around in the data directory. This changes
the selinux rules so that cppreopts is able to get rid of these
temporary files.

Test: phone boots.
Bug: 63995897
Change-Id: I2a7e654c3a3cee7c9f0be8ba64e40c365eee4cfe

Divide policy into public and private components.  This is the first
step in splitting the policy creation for platform and non-platform
policies.  The policy in the public directory will be exported for use
in non-platform policy creation.  Backwards compatibility with it will
be achieved by converting the exported policy into attribute-based
policy when included as part of the non-platform policy and a mapping
file will be maintained to be included with the platform policy that
maps exported attributes of previous versions to the current platform
version.

Eventually we would like to create a clear interface between the
platform and non-platform device components so that the exported policy,
and the need for attributes is minimal.  For now, almost all types and
avrules are left in public.

Test: Tested by building policy and running on device.

Change-Id: Idef796c9ec169259787c3f9d8f423edf4ce27f8c

(cherry picked from commit d3edd6b5)

Bug: 29278988
Change-Id: I199572377a6b5c33116c718a545159ddcf50df30

Bug: 29278988
Change-Id: I199572377a6b5c33116c718a545159ddcf50df30