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

*** 52,62 ****
  NEW_SUBDIRS =   \
          pargs   \
          plgrp   \
          pmadvise \
          ppriv   \
!         preap
  
  SUBDIRS = $(LEGACY_SUBDIRS) $(NEW_SUBDIRS)
  
  all     :=      TARGET = all
  install :=      TARGET = install
--- 52,63 ----
  NEW_SUBDIRS =   \
          pargs   \
          plgrp   \
          pmadvise \
          ppriv   \
!         preap   \
!         psecflags
  
  SUBDIRS = $(LEGACY_SUBDIRS) $(NEW_SUBDIRS)
  
  all     :=      TARGET = all
  install :=      TARGET = install
*** 71,81 ****
  pmadvise/pmadvise.po := CPPFLAGS +=     -I$(PMAP)
  
  #
  # Commands with messages support
  #
! POFILES = plgrp/plgrp.po pmadvise/pmadvise.po
  POFILE = ptools.po
  
  .KEEP_STATE:
  
  .PARALLEL: $(SUBDIRS)
--- 72,82 ----
  pmadvise/pmadvise.po := CPPFLAGS +=     -I$(PMAP)
  
  #
  # Commands with messages support
  #
! POFILES = plgrp/plgrp.po pmadvise/pmadvise.po psecflags/psecflags.po
  POFILE = ptools.po
  
  .KEEP_STATE:
  
  .PARALLEL: $(SUBDIRS)