Add information about {kerberos,kadmind}5_enable and change {kerberos,kadmind}_enable to {kerberos,kadmind}4_enable to match reality.  Fix some mismatched parentheses while I'm here.
Add information about {kerberos,kadmind}5_enable and change
{kerberos,kadmind}_enable to {kerberos,kadmind}4_enable to match
reality.  Fix some mismatched parentheses while I'm here.

PR:		34982
Submitted by:	Michel Oosterhof <m.oosterhof@xs4all.nl>

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