ICU-21954 LICENSE: add more license texts from icu4c files
diff --git a/icu4c/LICENSE b/icu4c/LICENSE
index 3bd59bb..80b5877 100644
--- a/icu4c/LICENSE
+++ b/icu4c/LICENSE
@@ -45,7 +45,7 @@
 use or other dealings in these Data Files or Software without prior
 written authorization of the copyright holder.
 
----------------------
+----------------------------------------------------------------------
 
 Third-Party Software Licenses
 
@@ -53,7 +53,9 @@
 terms for licensed third-party software components included within ICU
 libraries.
 
-1. ICU License - ICU 1.8.1 to ICU 57.1
+----------------------------------------------------------------------
+
+ICU License - ICU 1.8.1 to ICU 57.1
 
 COPYRIGHT AND PERMISSION NOTICE
 
@@ -88,7 +90,9 @@
 All trademarks and registered trademarks mentioned herein are the
 property of their respective owners.
 
-2. Chinese/Japanese Word Break Dictionary Data (cjdict.txt)
+----------------------------------------------------------------------
+
+Chinese/Japanese Word Break Dictionary Data (cjdict.txt)
 
  #     The Google Chrome software developed by Google is licensed under
  # the BSD license. Other software included in this distribution is
@@ -292,7 +296,9 @@
  #
  #  ---------------COPYING.ipadic-----END----------------------------------
 
-3. Lao Word Break Dictionary Data (laodict.txt)
+----------------------------------------------------------------------
+
+Lao Word Break Dictionary Data (laodict.txt)
 
  # Copyright (C) 2016 and later: Unicode, Inc. and others.
  # License & terms of use: http://www.unicode.org/copyright.html
@@ -332,7 +338,9 @@
  # OF THE POSSIBILITY OF SUCH DAMAGE.
  #  --------------------------------------------------------------------------
 
-4. Burmese Word Break Dictionary Data (burmesedict.txt)
+----------------------------------------------------------------------
+
+Burmese Word Break Dictionary Data (burmesedict.txt)
 
  #  Copyright (c) 2014 International Business Machines Corporation
  #  and others. All Rights Reserved.
@@ -372,7 +380,9 @@
  #  SUCH DAMAGE.
  #  --------------------------------------------------------------------------
 
-5. Time Zone Database
+----------------------------------------------------------------------
+
+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
@@ -395,7 +405,9 @@
  #    making a contribution to the database or code waives all rights to
  #    future claims in that contribution or in the TZ Database.
 
-6. Google double-conversion
+----------------------------------------------------------------------
+
+Google double-conversion
 
 Copyright 2006-2011, the V8 project authors. All rights reserved.
 Redistribution and use in source and binary forms, with or without
@@ -423,3 +435,85 @@
 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+
+File: aclocal.m4 (only for ICU4C)
+Section: pkg.m4 - Macros to locate and utilise pkg-config.
+
+
+Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
+Copyright © 2012-2015 Dan Nicholson <dbn.lists@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA.
+
+As a special exception to the GNU General Public License, if you
+distribute this file as part of a program that contains a
+configuration script generated by Autoconf, you may include it under
+the same distribution terms that you use for the rest of that
+program.
+
+
+(The condition for the exception is fulfilled because
+ICU4C includes a configuration script generated by Autoconf,
+namely the `configure` script.)
+
+----------------------------------------------------------------------
+
+File: config.guess (only for ICU4C)
+
+
+This file is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, see <https://www.gnu.org/licenses/>.
+
+As a special exception to the GNU General Public License, if you
+distribute this file as part of a program that contains a
+configuration script generated by Autoconf, you may include it under
+the same distribution terms that you use for the rest of that
+program.  This Exception is an additional permission under section 7
+of the GNU General Public License, version 3 ("GPLv3").
+
+
+(The condition for the exception is fulfilled because
+ICU4C includes a configuration script generated by Autoconf,
+namely the `configure` script.)
+
+----------------------------------------------------------------------
+
+File: install-sh (only for ICU4C)
+
+
+Copyright 1991 by the Massachusetts Institute of Technology
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation, and that the name of M.I.T. not be used in advertising or
+publicity pertaining to distribution of the software without specific,
+written prior permission.  M.I.T. makes no representations about the
+suitability of this software for any purpose.  It is provided "as is"
+without express or implied warranty.
diff --git a/icu4j/main/shared/licenses/LICENSE b/icu4j/main/shared/licenses/LICENSE
index 3bd59bb..80b5877 100644
--- a/icu4j/main/shared/licenses/LICENSE
+++ b/icu4j/main/shared/licenses/LICENSE
@@ -45,7 +45,7 @@
 use or other dealings in these Data Files or Software without prior
 written authorization of the copyright holder.
 
----------------------
+----------------------------------------------------------------------
 
 Third-Party Software Licenses
 
@@ -53,7 +53,9 @@
 terms for licensed third-party software components included within ICU
 libraries.
 
-1. ICU License - ICU 1.8.1 to ICU 57.1
+----------------------------------------------------------------------
+
+ICU License - ICU 1.8.1 to ICU 57.1
 
 COPYRIGHT AND PERMISSION NOTICE
 
@@ -88,7 +90,9 @@
 All trademarks and registered trademarks mentioned herein are the
 property of their respective owners.
 
-2. Chinese/Japanese Word Break Dictionary Data (cjdict.txt)
+----------------------------------------------------------------------
+
+Chinese/Japanese Word Break Dictionary Data (cjdict.txt)
 
  #     The Google Chrome software developed by Google is licensed under
  # the BSD license. Other software included in this distribution is
@@ -292,7 +296,9 @@
  #
  #  ---------------COPYING.ipadic-----END----------------------------------
 
-3. Lao Word Break Dictionary Data (laodict.txt)
+----------------------------------------------------------------------
+
+Lao Word Break Dictionary Data (laodict.txt)
 
  # Copyright (C) 2016 and later: Unicode, Inc. and others.
  # License & terms of use: http://www.unicode.org/copyright.html
@@ -332,7 +338,9 @@
  # OF THE POSSIBILITY OF SUCH DAMAGE.
  #  --------------------------------------------------------------------------
 
-4. Burmese Word Break Dictionary Data (burmesedict.txt)
+----------------------------------------------------------------------
+
+Burmese Word Break Dictionary Data (burmesedict.txt)
 
  #  Copyright (c) 2014 International Business Machines Corporation
  #  and others. All Rights Reserved.
@@ -372,7 +380,9 @@
  #  SUCH DAMAGE.
  #  --------------------------------------------------------------------------
 
-5. Time Zone Database
+----------------------------------------------------------------------
+
+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
@@ -395,7 +405,9 @@
  #    making a contribution to the database or code waives all rights to
  #    future claims in that contribution or in the TZ Database.
 
-6. Google double-conversion
+----------------------------------------------------------------------
+
+Google double-conversion
 
 Copyright 2006-2011, the V8 project authors. All rights reserved.
 Redistribution and use in source and binary forms, with or without
@@ -423,3 +435,85 @@
 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+
+File: aclocal.m4 (only for ICU4C)
+Section: pkg.m4 - Macros to locate and utilise pkg-config.
+
+
+Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
+Copyright © 2012-2015 Dan Nicholson <dbn.lists@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA.
+
+As a special exception to the GNU General Public License, if you
+distribute this file as part of a program that contains a
+configuration script generated by Autoconf, you may include it under
+the same distribution terms that you use for the rest of that
+program.
+
+
+(The condition for the exception is fulfilled because
+ICU4C includes a configuration script generated by Autoconf,
+namely the `configure` script.)
+
+----------------------------------------------------------------------
+
+File: config.guess (only for ICU4C)
+
+
+This file is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, see <https://www.gnu.org/licenses/>.
+
+As a special exception to the GNU General Public License, if you
+distribute this file as part of a program that contains a
+configuration script generated by Autoconf, you may include it under
+the same distribution terms that you use for the rest of that
+program.  This Exception is an additional permission under section 7
+of the GNU General Public License, version 3 ("GPLv3").
+
+
+(The condition for the exception is fulfilled because
+ICU4C includes a configuration script generated by Autoconf,
+namely the `configure` script.)
+
+----------------------------------------------------------------------
+
+File: install-sh (only for ICU4C)
+
+
+Copyright 1991 by the Massachusetts Institute of Technology
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation, and that the name of M.I.T. not be used in advertising or
+publicity pertaining to distribution of the software without specific,
+written prior permission.  M.I.T. makes no representations about the
+suitability of this software for any purpose.  It is provided "as is"
+without express or implied warranty.