Copyright for libio-string-perl source package in Huanghe V3.0

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

Files:     Changes
           MANIFEST
           META.yml
           Makefile.PL
           t/close.t
           t/para.t
           t/read.t
           t/seek.t
           t/truncate.t
           t/write.t
Copyright: __NO_COPYRIGHT_NOR_LICENSE__
License:   __NO_COPYRIGHT_NOR_LICENSE__

Files:     README
           String.pm
Copyright: 1998-2005 Gisle Aas.
           1998-2005 Gisle Aas.  
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.