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

*** 265,274 ****
--- 265,275 ----
          preadv.o                \
          priocntlset.o           \
          processor_bind.o        \
          processor_info.o        \
          profil.o                \
+         psecflagsset.o          \
          putmsg.o                \
          putpmsg.o               \
          pwrite.o                \
          pwritev.o               \
          read.o                  \
*** 514,523 ****
--- 515,525 ----
          posix_madvise.o         \
          posix_memalign.o        \
          priocntl.o              \
          privlib.o               \
          priv_str_xlate.o        \
+         psecflags.o             \
          psiginfo.o              \
          psignal.o               \
          pt.o                    \
          putpwent.o              \
          putspent.o              \