Update ICU to 58.1

source/data/translit/mn_mn_Latn_BGN.txt

Index: source/data/translit/mn_mn_Latn_BGN.txt
diff --git a/source/data/translit/Mongolian_Latin_BGN.txt b/source/data/translit/mn_mn_Latn_BGN.txt
similarity index 56%
rename from source/data/translit/Mongolian_Latin_BGN.txt
rename to source/data/translit/mn_mn_Latn_BGN.txt
index 9bb8e7405241692a7d862cb9df8b7cd26c11e92b..dbed925d0d6dee9e418bc8a99efe9f452374c723 100644
--- a/source/data/translit/Mongolian_Latin_BGN.txt
+++ b/source/data/translit/mn_mn_Latn_BGN.txt
@@ -1,14 +1,40 @@
-# ***************************************************************************
-# *
-# *  Copyright (C) 2004-2015, International Business Machines
-# *  Corporation; Unicode, Inc.; and others.  All Rights Reserved.
-# *
-# ***************************************************************************
-# File: Mongolian_Latin_BGN.txt
-# Generated from CLDR 
-#
-:: [АБВГДЕЁЖЗИЙКЛМНОӨПРСТУҮФХЦЧШЩЪЫЬЭЮЯабвгдеёжзийклмноөпрстуүфхцчшщъыьэюя] ;
-:: NFD (NFC) ;
+# © 2016 and later: Unicode, Inc. and others.
+# License & terms of use: http://www.unicode.org/copyright.html#License
+#
+# File: mn_mn_Latn_BGN.txt
+# Generated from CLDR
+#
+
+########################################################################
+# BGN/PCGN 1964 System
+#
+# The BGN/PCGN system for Mongolian was adopted by the BGN in 1957
+# and by the PCGN in 1964 for use in romanizing names written in
+# the Mongolian Cyrillic alphabet. The Mongolian Cyrillic alphabet
+# contains two letters not present in the Russian alphabet, Өө
+# and Үү. Names written in the indigenous Mongolian alphabet, which
+# is still utilized in the Inner Mongolia Autonomous Region of China,
+# are not romanized by BGN and PCGN. Instead, for such names,
+# BGN and PCGN utilize the Roman-script spellings appearing in
+# official sources published by the People's Republic of China
+#
+# The Mongolian Alphabet as defined by the BGN (Page 73):
+#
+#   АБВГДЕЁЖЗИЙКЛМНОӨПРСТУҮФХЦЧШЩЪЫЬЭЮЯ
+#   абвгдеёжзийклмноөпрстуүфхцчшщъыьэюя
+#
+# Originally prepared by Michael Everson <everson@evertype.com>
+########################################################################
+#
+# MINIMAL FILTER: Mongolian-Latin, works both in NFC and NFD
+::[АБВГДЕЁЖЗИЙКЛМНОӨПРСТУҮФХЦЧШЩЪЫЬЭЮЯабвгдеёжзийклмноөпрстуүфхцчшщъыьэюя\u0308];
+::NFC;
+########################################################################
+#
+# Define All Transformation Variables
+#
+########################################################################
+#
 $prime  = ʹ ;
 $upperConsonants = [БВГДЖЙКЛМНПРСТФХЦЧШЩЭ] ;
 $lowerConsonants = [бвгджйклмнпрстфхцчшщэ] ;
@@ -17,7 +43,12 @@ $upperVowels = [АЕЁЭИОУЫЮЯ] ;
 $lowerVowels = [аеёэиоуыюя] ;
 $vowels = [$upperVowels $lowerVowels] ;
 $lower = [$lowerConsonants $lowerVowels] ;
+# Use this $wordBoundary until bug 2034 is fixed in ICU:
+# http://bugs.icu-project.org/cgi-bin/icu-bugs/transliterate?id=2034;expression=boundary;user=guest
 $wordBoundary =  [^[:L:][:M:][:N:]] ;
+########################################################################
+# Start of Alphabetic Transformations
+########################################################################
 А → A ; # CYRILLIC CAPITAL LETTER A
 а → a ; # CYRILLIC SMALL LETTER A
 Б → B ; # CYRILLIC CAPITAL LETTER BE
@@ -77,6 +108,10 @@ $wordBoundary =  [^[:L:][:M:][:N:]] ;
 Ч} $lower → Ch ; # CYRILLIC CAPITAL LETTER CHE
 Ч → CH ; # CYRILLIC CAPITAL LETTER CHE
 ч → ch ; # CYRILLIC SMALL LETTER CHE
+########################################################################
+# Implied rule from BGN Russian-Latin transliteration (Page 94 Note 3.6).
+# шч becomes sh·ch
+########################################################################
 ШЧ → SH·CH ; # CYRILLIC CAPITAL LETTER SHA
 Шч → Sh·ch ; # CYRILLIC CAPITAL LETTER SHA
 шч → sh·ch ; # CYRILLIC SMALL LETTER SHA
@@ -86,6 +121,9 @@ $wordBoundary =  [^[:L:][:M:][:N:]] ;
 Щ} $lower → Shch ; # CYRILLIC CAPITAL LETTER SHCHA
 Щ → SHCH ; # CYRILLIC CAPITAL LETTER SHCHA
 щ → shch ; # CYRILLIC SMALL LETTER SHCHA
+########################################################################
+# End Implied rule
+########################################################################
 Ъ → $prime ; # CYRILLIC CAPITAL LETTER HARD SIGN
 ъ → $prime ; # CYRILLIC SMALL LETTER HARD SIGN
 Ы → Ï ; # CYRILLIC CAPITAL LETTER YERU
@@ -94,9 +132,26 @@ $wordBoundary =  [^[:L:][:M:][:N:]] ;
 ь → ĭ ; # CYRILLIC SMALL LETTER SOFT SIGN
 Э → E ; # CYRILLIC CAPITAL LETTER E
 э → e ; # CYRILLIC SMALL LETTER E
+########################################################################
+#
+# BGN Page 74 Rule 7
+#
+# In monosyllables, the character ю is romanized yu or yü depending on
+# pronunciation; in polysyllables, it is romanized yu when followed by
+# a, o, or u, buy yü when followed by i, e, ö, or ü.
+#
+# This rule is lexical and has not been implemented in this file.
+#
+########################################################################
 Ю} $lower → Yu ; # CYRILLIC CAPITAL LETTER YU
 Ю → YU ; # CYRILLIC CAPITAL LETTER YU
 ю → yu ; # CYRILLIC SMALL LETTER YU
+########################################################################
+#
+# End Rule 7
+#
+########################################################################
 Я} $lower → Ya ; # CYRILLIC CAPITAL LETTER YA
 Я → YA ; # CYRILLIC CAPITAL LETTER YA
 я → ya ; # CYRILLIC SMALL LETTER YA
+