Copyright for eperl source package in Bionic

This is Debian GNU/Linux's prepackaged version of
ePerl © 1996-1999 Ralf S. Engelschall 

This package was originally put together by Heiko Schlittermann
 and has been updated from the sources originally
obtained from http://www.engelschall.com/sw/eperl/distrib/, now
available at ftp://ftp.ossp.org/pkg/tool/eperl/.

It is currently maintained by the Debian WML Packaging Team, see
http://pkg-wml.alioth.debian.org/.

This program is free software; it may be redistributed and/or modified
under the terms of either the Artistic License or the GNU General
Public License (version 2), which may be found on Debian systems at
`/usr/share/common-licenses/GPL-2' and
`/usr/share/common-licenses/Artistic'.