Copyright for libhash-merge-perl source package in Yangtze V1.0

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: libhash-merge-perl
Source: 
#
# Please double check copyright with the licensecheck(1) command.

Files:     Changes
           MAINTAINER.md
           MANIFEST
           MANIFEST.SKIP
           META.json
           META.yml
           Makefile.PL
           t/Auto/00-load.t
           t/Auto/01-merge.t
           t/Auto/02-oo.t
           t/Clone/00-load.t
           t/Clone/01-merge.t
           t/Clone/02-oo.t
           t/ClonePP/00-load.t
           t/ClonePP/01-merge.t
           t/ClonePP/02-oo.t
           t/Storable/00-load.t
           t/Storable/01-merge.t
           t/Storable/02-oo.t
           t/inline/00-load.t
           t/inline/01-merge.t
           t/inline/02-oo.t
Copyright: __NO_COPYRIGHT_NOR_LICENSE__
License:   __NO_COPYRIGHT_NOR_LICENSE__

Files:     README.md
           lib/Hash/Merge.pm
Copyright: 2001-2002 Michael K. Neylon.
           2013-2020 Jens Rehsack.
           2017-2020 Stefan Hermes.
License:   __UNKNOWN__
 This library is free software.  You can redistribute it and/or modify it
 under the same terms as Perl itself.

#----------------------------------------------------------------------------
# Files marked as NO_LICENSE_TEXT_FOUND may be covered by the following
# license/copyright files.