Update notes for submitted changes

* Allow device admin policy to override policy boolean state.
* Fix SELinux.java doc errors
* Restore support for labeling non-system apps based on their certificate.
* Drop "SE Android" from strings.
* Replace SEAndroid with SELinux.
* Add data validation on seinfo labels.
* Follow AOSP behavior for seinfo assignment.
* Save off the seinfo value with packages.list.
* Bring install-time code inline with AOSP.
* Move seinfo and install-time changes to inside PMS.
* Change DPMS code to accommodate enforce states on boot.
* Update location of policy files
* Proper security labeling of multi-user data directories.
* Implement Device Admin API for MMAC
* Apply MMAC changes from master.
* Simplify check during admin removal for whether to cleanup SELinux
* Remove SELinux additions from public API
* Add APIs to allow Device Admins to change SELinux settings
* Save off the seinfo value with packages.list.
* Added SELinux enforcing status and booleans keys to secure system settings.
* Add seinfo parsing to PackageManagerService.