If a timeout is specified, make sure that rcmd() completes within the specified time. Previously, rsh could potentially hang indefinitely at this point even when a timeout was set, for example if the server accepts the connection and then never sends any reply.
If a timeout is specified, make sure that rcmd() completes within
the specified time. Previously, rsh could potentially hang indefinitely
at this point even when a timeout was set, for example if the server
accepts the connection and then never sends any reply.

PR:		bin/20042
Submitted by:	Keith White <Keith.White@site.uottawa.ca>
MFC after:	1 week

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