ICU update to 54 step 3

source/data/mappings/iso-8859-10-html.ucm

Index: source/data/mappings/iso-8859-10-html.ucm
diff --git a/source/data/mappings/iso-8859_10-1998.ucm b/source/data/mappings/iso-8859-10-html.ucm
similarity index 70%
copy from source/data/mappings/iso-8859_10-1998.ucm
copy to source/data/mappings/iso-8859-10-html.ucm
index 4d4c3f81c52f0e57ac2cb4629393b44e32a1ffb6..02a316035e92c7f5a99018069ef8c24c07198bda 100644
--- a/source/data/mappings/iso-8859_10-1998.ucm
+++ b/source/data/mappings/iso-8859-10-html.ucm
@@ -1,52 +1,19 @@
-#
-#	Name:             ISO/IEC 8859-10:1998 to Unicode
-#	Unicode version:  3.0
-#	Table version:    1.1
-#	Table format:     Format A
-#	Date:             1999 October 11
-#	Authors:          Ken Whistler <kenw@sybase.com>
-#
-#	Copyright (c) 1999 Unicode, Inc.  All Rights reserved.
-#       Copyright (C) 2002-2005, International Business Machines
-#           Corporation and others.  All Rights Reserved.
-#
-#	This file is provided as-is by Unicode, Inc. (The Unicode Consortium).
-#	No claims are made as to fitness for any particular purpose.  No
-#	warranties of any kind are expressed or implied.  The recipient
-#	agrees to determine applicability of information provided.  If this
-#	file has been provided on optical media by Unicode, Inc., the sole
-#	remedy for any claim will be exchange of defective media within 90
-#	days of receipt.
-#
-#	Unicode, Inc. hereby grants the right to freely use the information
-#	supplied in this file in the creation of products supporting the
-#	Unicode Standard, and to make copies of this file in any form for
-#	internal or external distribution as long as this notice remains
-#	attached.
-#
-#	General notes:
-#
-#	This table contains the data the Unicode Consortium has on how
-#       ISO/IEC 8859-10:1998 characters map into Unicode.
-#
-#	Format:  The ICU UCM format
-#
-#	Version history
-#	1.0 version new.
-#       1.1 corrected mistake in mapping of 0xA4
-#
-#	Updated versions of this file may be found in:
-#		<ftp://ftp.unicode.org/Public/MAPPINGS/>
-#
-#	Any comments or problems, contact <errata@unicode.org>
-#	Please note that <errata@unicode.org> is an archival address;
-#	notices will be checked, but do not expect an immediate response.
-#
-<code_set_name>               "iso-8859_10-1998"
+# ***************************************************************************
+# *
+# *   Generated from index-iso-8859-10.txt (
+# *   https://encoding.spec.whatwg.org/index-iso-8859-10.txt )
+# *   following the algorithm for the single byte legacy encoding
+# *   described at http://encoding.spec.whatwg.org/#single-byte-decoder
+# *
+# ***************************************************************************
+<code_set_name>               "iso-8859-10-html"
+<char_name_mask>              "AXXXX"
 <mb_cur_max>                  1
 <mb_cur_min>                  1
 <uconv_class>                 "SBCS"
-<subchar>                     \x1A
+<subchar>                     \x3F
+<icu:charsetFamily>           "ASCII"
+
 CHARMAP
 <U0000> \x00 |0
 <U0001> \x01 |0