Add <sys/types.h> to synopsis. Correct a grammatical error. Add cross-reference to setrlimit(2).
Add <sys/types.h> to synopsis.
Correct a grammatical error.
Add cross-reference to setrlimit(2).

Obtained from:	OpenBSD

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