The Safety app has appeared on older sigtapes. Since some of its
functions can change process privs and the mechanisms changed for
this in VMS 7.2/Alpha, this version has some (somewhat experimental)
recompilations to support changes to PSBs instead of ARBs where
appropriate.

Note that privs etc. will only be touched in VMS 7.2 if the PSB
(personna block) is the "natural" one, i.e., if the process has
not changed personnas. This will apply to very nearly all
processes and is done because the notion of changing a process'
privileges where it has them in virtue of many personnas is not
clearly defined.

The other functions are unchanged. The sources presented on the
older sigtapes have the functions in them, but they were conditioned
out in VMS 7.1 and before on Alpha.