Copyright for tzdata source package in Yangtze V1.0

This is the Debian prepackaged version of the Time Zone and Daylight 
Saving Time Data. 

It was downloaded from https://www.iana.org/time-zones

Upstream Author: The Internet Assigned Numbers Authority (IANA)
Commentary should be addressed to tz@iana.org

Copyright: This database is in the public domain.

Files: debian/icu/*.txt
Copyright: 2016-2020 Unicode, Inc. and others.
# This is just the tzdata "Data Files" which uses "Third-Party
# Software Licenses 5. Time Zone Database"
License: ICU
 COPYRIGHT AND PERMISSION NOTICE (ICU 58 and later)
 .
 Copyright © 1991-2020 Unicode, Inc. All rights reserved.
 Distributed under the Terms of Use in https://www.unicode.org/copyright.html.
 .
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of the Unicode data files and any associated documentation
 (the "Data Files") or Unicode software and any associated documentation
 (the "Software") to deal in the Data Files or Software
 without restriction, including without limitation the rights to use,
 copy, modify, merge, publish, distribute, and/or sell copies of
 the Data Files or Software, and to permit persons to whom the Data Files
 or Software are furnished to do so, provided that either
 (a) this copyright and permission notice appear with all copies
 of the Data Files or Software, or
 (b) this copyright and permission notice appear in associated
 Documentation.
 .
 THE DATA FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF
 ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 NONINFRINGEMENT OF THIRD PARTY RIGHTS.
 IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS
 NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL
 DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 PERFORMANCE OF THE DATA FILES OR SOFTWARE.
 .
 Except as contained in this notice, the name of a copyright holder
 shall not be used in advertising or otherwise to promote the sale,
 use or other dealings in these Data Files or Software without prior
 written authorization of the copyright holder.
 .
 ---------------------
 .
 Third-Party Software Licenses
 .
 This section contains third-party software notices and/or additional
 terms for licensed third-party software components included within ICU
 libraries.
 .
 5. Time Zone Database
 .
   ICU uses the public domain data and code derived from Time Zone
 Database for its time zone support. The ownership of the TZ database
 is explained in BCP 175: Procedure for Maintaining the Time Zone
 Database section 7.
 .
  # 7.  Database Ownership
  #
  #    The TZ database itself is not an IETF Contribution or an IETF
  #    document.  Rather it is a pre-existing and regularly updated work
  #    that is in the public domain, and is intended to remain in the
  #    public domain.  Therefore, BCPs 78 [RFC5378] and 79 [RFC3979] do
  #    not apply to the TZ Database or contributions that individuals make
  #    to it.  Should any claims be made and substantiated against the TZ
  #    Database, the organization that is providing the IANA
  #    Considerations defined in this RFC, under the memorandum of
  #    understanding with the IETF, currently ICANN, may act in accordance
  #    with all competent court orders.  No ownership claims will be made
  #    by ICANN or the IETF Trust on the database or the code.  Any person
  #    making a contribution to the database or code waives all rights to
  #    future claims in that contribution or in the TZ Database.