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

*** 189,198 ****
--- 189,200 ----
  
  /*
   * 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.
   */