uts: Allow for address space randomisation.
Randomise the base addresses of shared objects, non-fixed mappings, the
stack and the heap.  Introduce a service, svc:/system/process-security,
and a tool psecflags(1) to control and observe it

@@ -1085,10 +1085,15 @@
         cp->p_usrstack = pp->p_usrstack;
         cp->p_model = pp->p_model;
         cp->p_ppid = pp->p_pid;
         cp->p_ancpid = pp->p_pid;
         cp->p_portcnt = pp->p_portcnt;
+        /*
+         * Security flags are preserved on fork, the inherited copy come into
+         * effect on exec
+         */
+        bcopy(&pp->p_secflags, &cp->p_secflags, sizeof (psecflags_t));
 
         /*
          * Initialize watchpoint structures
          */
         avl_create(&cp->p_warea, wa_compare, sizeof (struct watched_area),