Replace obsolete selinux_android_restorecon* functions with macros.

Replace the older selinux_android_restorecon() and
selinux_android_restorecon_recursive() functions with macros
calling the new selinux_android_restorecon_flags() function with
the right flags.  These macros provide temporary API compatibility
until all callers are updated.

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>

Change-Id: Ib52c3d7a375d2cf3ac7a3d4460b4ba51860315cb