BSD advertisement clause

[bgermann]

The BSD-4-clause license that is in use in netkit-ftp applies only to files that have a copyright by The Regents of the University of California. It is well known that they allow to drop the advertisement clause (3.) from the license, resulting in BSD-3-clause.

Please drop every appearance of the advertisement clause from the source. This is actually necessary to enable binary distribution of the program linked with readline, which is GPL licensed. The advertisement clause is incompatible with the GPL.