athinfod, discuss, and cview don't clean up /etc/services on uninstallation

[jdreed]

athinfod, discuss, and cview don't clean up their additions to /etc/services. It's possible that doing stupid things with sed -i is not a good idea, but nonetheless we should probably try to clean up after ourselves.

[jdreed]

(It's possible this ticket should turn into "debathena-athinfo doesn't cleanup /etc/services", but whatever.)

[andersk]

debathena-athinfo is in debathena-clients and isn’t supposed to require debathena-nsswitch-config at all, much less a funny nss services config.

[jdreed]

This ticket is actually "compile in default values to athinfo, athinfod, discuss, larvnet, and cview" and "check the return value of getservent() and deal appropriately". People who, god forbid, are running this at another site on non-standard ports can add their own services entry, and we can move on with our lives.

[jdreed]

Per zephyr, of the two ports below 49152 that we use (2100, discuss; 3704, cview), they both conflict with IANA assignments. The other ports are in the Private range and cannot be officially registered.