/proc/<pid>/{cwd,root} links to <defunct> for cygrunsrv, daemons, and shells

[Brian Inglis <Brian.Inglis@SystematicSW.ab.ca>]

ISTM anomalous that for cygrunsrv, daemons, cron processes, and shells 
/proc/<pid>/{cwd,root} have bad symlinks to "<defunct>", normally a process or 
exe status:

/proc/732/exe   -> /usr/bin/cygrunsrv
/proc/732/root  -> <defunct>
/proc/732/cwd   -> <defunct>
|  /proc/733/exe   -> /usr/sbin/cygserver
  ->/proc/733/root  -> <defunct>
    /proc/733/cwd   -> <defunct>
/proc/740/exe   -> /usr/bin/cygrunsrv
/proc/740/root  -> <defunct>
/proc/740/cwd   -> <defunct>
|  /proc/741/exe   -> /usr/sbin/syslog-ng
  ->/proc/741/root  -> <defunct>
    /proc/741/cwd   -> <defunct>
/proc/748/exe   -> /usr/bin/cygrunsrv
/proc/748/root  -> <defunct>
/proc/748/cwd   -> <defunct>
|  /proc/749/exe   -> /usr/sbin/cron
  ->/proc/749/root  -> <defunct>
    /proc/749/cwd   -> <defunct>
    |  /proc/2080/exe  -> /usr/sbin/cron
     ->/proc/2080/root -> <defunct>
       /proc/2080/cwd  -> <defunct>
       |  /proc/2082/exe  -> /usr/bin/bash
        ->/proc/2082/root -> <defunct>
          /proc/2082/cwd  -> <defunct>

Should we consider changing that to root "/", or nothing, null, or something 
meaningful?

-- 
Take care. Thanks, Brian Inglis              Calgary, Alberta, Canada

La perfection est atteinte                   Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter  not when there is no more to add
mais lorsqu'il n'y a plus rien à retirer     but when there is no more to cut
                                 -- Antoine de Saint-Exupéry