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

*** 139,149 ****
  #define SNF     97              /* print AT_SYMLINK_[NO]FOLLOW flag */
  #define SKC     98              /* print sockconfig subcode */
  #define ACF     99              /* accept4 flags */
  #define PFD     100             /* pipe fds[2] */
  #define GRF     101             /* getrandom flags */
! #define HID     102             /* hidden argument, don't print */
                                  /* make sure HID is always the last member */
  
  /*
   * Print routines, indexed by print codes.
   */
--- 139,151 ----
  #define SNF     97              /* print AT_SYMLINK_[NO]FOLLOW flag */
  #define SKC     98              /* print sockconfig subcode */
  #define ACF     99              /* accept4 flags */
  #define PFD     100             /* pipe fds[2] */
  #define GRF     101             /* getrandom flags */
! #define PSFCMD  102             /* psecflags(2) command */
! #define PSFLG   103             /* psecflags(2) flags */
! #define HID     104             /* hidden argument, don't print */
                                  /* make sure HID is always the last member */
  
  /*
   * Print routines, indexed by print codes.
   */