Log Message:
F4.0.4.21
        - do_auth.py - better Nexus support, better AV replacement, and only
          send roles to Nexus
        - fix bug in checking the return value of regexec() for login and
          enable ACLs.
        - do_auth.py - better Nexus support, better AV replacement, and only

F4.0.4.22
        - check of regexec() return value inverted