Don't remove queued SIGCHLD if options contain WNOWAIT, so other threads still can be notified by the signal.
Don't remove queued SIGCHLD if options contain WNOWAIT, so other
threads still can be notified by the signal.

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