Add a section documenting the sysctl(8) tunables that influence the operation of ktrace(2).  Add a cross-reference to sysctl(8).  Make the language of rev 1.22 more consistent with the rest of the manual page.
Add a section documenting the sysctl(8) tunables that influence the
operation of ktrace(2).  Add a cross-reference to sysctl(8).  Make the
language of rev 1.22 more consistent with the rest of the manual page.

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