Set SO_REUSEADDR so that lpd can start while old lpd connections are still winding down (or timing out).  Also, be slightly more informative in mcleanup() about why lpd is exiting.
Set SO_REUSEADDR so that lpd can start while old lpd connections are still
winding down (or timing out).  Also, be slightly more informative in
mcleanup() about why lpd is exiting.

PR:		21595

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