Link ipfilter(4) and ipfilter(5) to the build to stop the wrong man page displaying for 'man 4 ipfilter'.
Link ipfilter(4) and ipfilter(5) to the build to stop the wrong man page
displaying for 'man 4 ipfilter'.

PR:		docs/118020
Approved by:	gjb (mentor)
MFC after:	5 days

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