Upgrade ICU from 63.1 up to 63.2

Commits are taken from https://github.com/unicode-org/icu/commits/release-63-2.

This includes cherry-picking the following upstream commits:

1. ICU-20208 uspoof.cpp function checkImpl should be static, regenerate urename.h
   (cherry picked from commit 9ec2c332c1c9156323944ea2b15c2b91952efae4)

2. ICU-20240 Fix Windows build failure in japancal.cpp
   (cherry picked from commit 3d86d24a682e8073f9c0073f63e208f2d9f58e0c)

4. ICU-20246 Fixing another integer overflow in number parsing.
   (cherry picked from commit 53d8c8f3d181d87a6aa925b449b51c4a2c922a51)

5. ICU-20255 revert to reflection for methods not yet in Android API level 21..23
   (cherry picked from commit cee3c150ab648b6cee46fb377598c157824d3a61)

5. ICU-20536 Japanese era Reiwa support in ICU4C 63

6. ICU-20536 Japanese era Reiwa support in ICU4J 63

7. ICU-20536 ICU 63.2 release tasks + tzdata2019a

The following commits should have been cherry-picked normally, but were skipped since
they have already been merged:

1. ICU-20214 Fix namespace error on Cygwin
   (cherry picked from commit 31b89b54840361fdfc367ef02019b10424cdb75c)
   (merged in http://r.android.com/840834)

2. ICU-20209 Fix build failures on Windows with std::atomic not in enclosing namespace std
   (cherry picked from commit 5a34bfb1516a6719b5f470063c6be2f47446f0b2)
   (merged in http://r.android.com/840835)

3. ICU-20250 faster MutableCodePointTrie.build(): use a hashtable to find equal blocks in earlier parts of the compacted data & index arrays
   (cherry picked from commit 59006770ed0a11d197cf39cbee92e4c96ab00ed8)
   (merged in http://r.android.com/819398)

4. ICU-20250 make UnicodeSet(intprop=value) faster
     - fastpath for UnicodeSet.add(new last range)
     - fewer UnicodeSet memory allocations:
       initial internal list array, exponential array growth,
       allocate strings list/set only when first one is added
     - faster CodePointTrie.getRange(): fewer calls to filter function
     - revert UnicodeSet(intprop=value) from trie ranges to range starts + lookup
     - cache per-int-prop range starts: fewer lookups
   (cherry picked from commit 98f9170004c29388d756a8a283573164a7a26bef)
   (merged in http://r.android.com/829900)

The following things were done to update all CLDR and ICU related files:

 * Run ./updateicudata.py after upgrading ICU to 63.2
 * Run ./updatecldrdata.py after updating external/cldr
 * Update libandroidicu with ./tools/icu4c_srcgen/generate_libandroidicu.py
 * Update README.version to 63.2
 * Generate android_icu4j sources with ./tools/srcgen/generate_android_icu4j.sh
 * Run system/timezone/update-tzdata.py, but no tzdata was changed

Bug: 77858319
Test: ./tools/updatecldrdata.py
Test: ./tools/updateicudata.py
Test: ./tools/srcgen/generate_android_icu4j.sh
Test: system/timezone/update-tzdata.py
Test: m droid cts
Test: cts-tradefed run cts-dev -m CtsLibcoreTestCases
Test: cts-tradefed run cts-dev -m CtsLibcoreOjTestCases
Test: cts-tradefed run cts-dev -m CtsIcuTestCases
Change-Id: I6c1190c364176977e6aed8fda18e63f4cc8df667

4 files changed, 37 insertions, 7 deletions

diff --git a/android_icu4j/src/main/tests/android/icu/dev/test/calendar/JapaneseTest.java b/android_icu4j/src/main/tests/android/icu/dev/test/calendar/JapaneseTest.java
index 7ada8bb41..77a24553d 100644
--- a/android_icu4j/src/main/tests/android/icu/dev/test/calendar/JapaneseTest.java
+++ b/android_icu4j/src/main/tests/android/icu/dev/test/calendar/JapaneseTest.java
@@ -157,9 +157,9 @@ public class JapaneseTest extends CalendarTestFmwk {
         Calendar cal = new JapaneseCalendar(loc);
         DateFormat enjformat = cal.getDateTimeFormat(0,0,new ULocale("en_JP@calendar=japanese"));
         DateFormat format = cal.getDateTimeFormat(0,0,loc);
-        ((SimpleDateFormat)format).applyPattern("y.M.d");  // Note: just 'y' doesn't work here.
+        ((SimpleDateFormat)format).applyPattern("y/M/d");  // Note: just 'y' doesn't work here.
         ParsePosition pos = new ParsePosition(0);
-        Date aDate = format.parse("1.1.9", pos); // after the start of heisei accession.  Jan 1, 1H wouldn't work  because it is actually showa 64
+        Date aDate = format.parse("1/5/9", pos); // after the start of Reiwa accession.  Jan 1, R1 wouldn't work  because it is actually Heisei 31
         String inEn = enjformat.format(aDate);
 
         cal.clear();
@@ -168,7 +168,7 @@ public class JapaneseTest extends CalendarTestFmwk {
         int gotEra = cal.get(Calendar.ERA);
 
         int expectYear = 1;
-        int expectEra = JapaneseCalendar.CURRENT_ERA;
+        int expectEra = JapaneseCalendar.CURRENT_ERA;   // Reiwa
 
         if((gotYear != expectYear) || (gotEra != expectEra)) {
             errln("Expected year " + expectYear + ", era " + expectEra +", but got year " + gotYear + " and era " + gotEra + ", == " + inEn);
@@ -176,7 +176,7 @@ public class JapaneseTest extends CalendarTestFmwk {
             logln("Got year " + gotYear + " and era " + gotEra + ", == " + inEn);
         }
 
-        // Test parse with missing era (should default to current era, heisei)
+        // Test parse with missing era (should default to current era)
         // Test parse with incomplete information
         logln("Testing parse w/ just year...");
         Calendar cal2 = new JapaneseCalendar(loc);
@@ -200,7 +200,7 @@ public class JapaneseTest extends CalendarTestFmwk {
         gotYear = cal2.get(Calendar.YEAR);
         gotEra = cal2.get(Calendar.ERA);
         expectYear = 1;
-        expectEra = JapaneseCalendar.CURRENT_ERA;
+        expectEra = JapaneseCalendar.CURRENT_ERA;   // Reiwa
         if((gotYear != 1) || (gotEra != expectEra)) {
             errln("parse "+ samplestr + " of 'y' as Japanese Calendar, expected year " + expectYear +
                 " and era " + expectEra + ", but got year " + gotYear + " and era " + gotEra + " (Gregorian:" + str +")");
@@ -382,5 +382,30 @@ public class JapaneseTest extends CalendarTestFmwk {
         doLimitsTest(jcal, null, cal.getTime());
         doTheoreticalLimitsTest(jcal, true);
     }
+    
+    public void TestHeiseiToReiwa() {
+        Calendar cal = Calendar.getInstance();
+        cal.set(2019, Calendar.APRIL, 29);
+
+        DateFormat jfmt = DateFormat.getDateInstance(DateFormat.LONG, new ULocale("ja@calendar=japanese"));
+
+        final String[] EXPECTED_FORMAT = {
+                "\u5E73\u621031\u5E744\u670829\u65E5",  // Heisei 31 April 29
+                "\u5E73\u621031\u5E744\u670830\u65E5",  // Heisei 31 April 30
+                "\u4EE4\u548C1\u5E745\u67081\u65E5",    // Reiwa 1 May 1
+                "\u4EE4\u548C1\u5E745\u67082\u65E5",    // Reiwa 1 May 2
+        };
+
+        for (int i = 0; i < EXPECTED_FORMAT.length; i++) {
+            Date d = cal.getTime();
+            String dateStr = jfmt.format(d);
+            if (!EXPECTED_FORMAT[i].equals(dateStr)) {
+                errln("Formatting year:" + cal.get(Calendar.YEAR) + " month:" + (cal.get(Calendar.MONTH) + 1)
+                        + " day:" + cal.get(Calendar.DATE) + " - expected: " + EXPECTED_FORMAT[i]
+                        + " / actual: " + dateStr);
+            }
+            cal.add(Calendar.DATE, 1);
+        }
+    }
 }
 
diff --git a/android_icu4j/src/main/tests/android/icu/dev/test/format/NumberFormatTest.java b/android_icu4j/src/main/tests/android/icu/dev/test/format/NumberFormatTest.java
index 1162301a7..e8093d273 100644
--- a/android_icu4j/src/main/tests/android/icu/dev/test/format/NumberFormatTest.java
+++ b/android_icu4j/src/main/tests/android/icu/dev/test/format/NumberFormatTest.java
@@ -6328,6 +6328,11 @@ public class NumberFormatTest extends TestFmwk {
         result = nf.parse("1E-547483647");
         assertEquals("Should *not* snap to zero",
                 "1E-547483647", result.toString());
+
+        // Test edge case overflow of exponent
+        result = nf.parse(".0003e-2147483644");
+        assertEquals("Should not overflow",
+                "0", result.toString());
     }
 
     @Test
diff --git a/android_icu4j/src/main/tests/android/icu/dev/test/util/DebugUtilitiesData.java b/android_icu4j/src/main/tests/android/icu/dev/test/util/DebugUtilitiesData.java
index 269051acf..084aecd5c 100644
--- a/android_icu4j/src/main/tests/android/icu/dev/test/util/DebugUtilitiesData.java
+++ b/android_icu4j/src/main/tests/android/icu/dev/test/util/DebugUtilitiesData.java
@@ -14,7 +14,7 @@ import android.icu.testsharding.MainTestShard;
 
 @MainTestShard
 public class DebugUtilitiesData extends Object {
-    public static final String ICU4C_VERSION="63.1";
+    public static final String ICU4C_VERSION="63.2";
     public static final int UDebugEnumType = 0;
     public static final int UCalendarDateFields = 1;
     public static final int UCalendarMonths = 2;
diff --git a/android_icu4j/src/main/tests/android/icu/extratest/android_icu_version.properties b/android_icu4j/src/main/tests/android/icu/extratest/android_icu_version.properties
index 049c16089..dc60326cf 100644
--- a/android_icu4j/src/main/tests/android/icu/extratest/android_icu_version.properties
+++ b/android_icu4j/src/main/tests/android/icu/extratest/android_icu_version.properties
@@ -1,2 +1,2 @@
 # Property file for AndroidICUVersionTest.
-version=63.1.0.0
+version=63.2.0.0