MFC revision 1.3:   Log:   Handle circular dependencies properly (via errx(3)) rather than dumping   core.  This bug was made visible by a recent change to the audio/timidity++   port, which now has itself as a run dependency.
MFC revision 1.3:
  Log:
  Handle circular dependencies properly (via errx(3)) rather than dumping
  core.  This bug was made visible by a recent change to the audio/timidity++
  port, which now has itself as a run dependency.

Approved by:	re (scottl)

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase