Add preliminary support for netgroup.byuser and netgroup.byhosts maps.
Add preliminary support for netgroup.byuser and netgroup.byhosts maps.

(I have to make another pass through here soon; awk doesn't handle
lines broken up with '\', which can sometimes appear in netgroup maps.)

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