make this repect ps_sigintr if there is a pre-existing signal or suspension request.
make this repect ps_sigintr if there is a pre-existing signal
or suspension request.

Submitted by:	David Xu

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