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

*** 49,58 ****
--- 49,59 ----
           * to specify the real system call number.
           */
  
  #define SYS_syscall     0
  #define SYS_exit        1
+ #define SYS_psecflags   2
  #define SYS_read        3
  #define SYS_write       4
  #define SYS_open        5
  #define SYS_close       6
  #define SYS_linkat      7