runshutdown(): get rid of getdtablesize loop, it gains nothing now but can waste time if many descriptors are available
runshutdown(): get rid of getdtablesize loop, it gains nothing now
but can waste time if many descriptors are available

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