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

@@ -189,10 +189,12 @@
 
 /*
  * Note that 2023 is reserved for the AT_SUN_HWCAP2 word defined above.
  */
 
+#define AT_SUN_SECFLAGS         2024
+
 /*
  * The kernel is in a better position to determine whether a process needs to
  * ignore dangerous LD environment variables.  If set, this flags tells
  * ld.so.1 to run "secure" and ignore the the environment.
  */