Clarifies that filesystem permission 0700 is not enforced as an invariant

The 0700 permission on apps' home directories is not
enforced as a invariant. This change to the behavior
changes documentation reflects this.

Change-Id: I2257796b804574f3c6c7d273957625f4458fe81b
(cherry picked from commit b25a17b3eacb9fe27e1d65e1b4b9136dbcd0c112)
1 file changed