MFC parts of 1.359:  Don't hold the proc slock while calling sigqueue_delete*
MFC parts of 1.359:  Don't hold the proc slock while calling sigqueue_delete*

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