BRAVO: Mount system, userdata and cache via mount_all by init.

This is needed for LOLLIPOP. "mount_all" needs to be used by init
and must return without errors to report the encryption state.
After that init starts services of class "main". Otherwise the
Android runtime does not start.

Change-Id: Iea29fa5d07d87ade23c1713d590ab300152540b5