Fixes for 64 bit cleanliness.  The length arg to sysctl is a pointer to size_t not int.
Fixes for 64 bit cleanliness.  The length arg to sysctl is a pointer to
size_t not int.

Reviewed by:	bp

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