deps: icu 63.1 bump (CLDR 34)

- Full release notes: http://site.icu-project.org/download/63

Fixes: #22344

PR-URL: #23715
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

deps/icu-small/README-SMALL-ICU.txt

@@ -1,8 +1,8 @@
 Small ICU sources - auto generated by shrink-icu-src.py
 
 This directory contains the ICU subset used by --with-intl=small-icu (the default)
-It is a strict subset of ICU 62 source files with the following exception(s):
-* deps/icu-small/source/data/in/icudt62l.dat : Reduced-size data file
+It is a strict subset of ICU 63 source files with the following exception(s):
+* deps/icu-small/source/data/in/icudt63l.dat : Reduced-size data file
 
 
 To rebuild this directory, see ../../tools/icu/README.md

deps/icu-small/source/common/bmpset.cpp

@@ -241,13 +241,13 @@ void BMPSet::overrideIllegal() {
             bmpBlockBits[i]|=bits;
         }
 
-        mask=~(0x10001<<0xd);   // Lead byte 0xED.
+        mask= static_cast<uint32_t>(~(0x10001<<0xd));   // Lead byte 0xED.
         bits=1<<0xd;
         for(i=32; i<64; ++i) {  // Second half of 4k block.
             bmpBlockBits[i]=(bmpBlockBits[i]&mask)|bits;
         }
     } else {
-        mask=~(0x10001<<0xd);   // Lead byte 0xED.
+        mask= static_cast<uint32_t>(~(0x10001<<0xd));   // Lead byte 0xED.
         for(i=32; i<64; ++i) {  // Second half of 4k block.
             bmpBlockBits[i]&=mask;
         }

deps/icu-small/source/common/bytesinkutil.cpp

@@ -11,6 +11,7 @@
 #include "unicode/utf8.h"
 #include "unicode/utf16.h"
 #include "bytesinkutil.h"
+#include "charstr.h"
 #include "cmemory.h"
 #include "uassert.h"
 
@@ -120,4 +121,41 @@ ByteSinkUtil::appendUnchanged(const uint8_t *s, const uint8_t *limit,
     return TRUE;
 }
 
+CharStringByteSink::CharStringByteSink(CharString* dest) : dest_(*dest) {
+}
+
+CharStringByteSink::~CharStringByteSink() = default;
+
+void
+CharStringByteSink::Append(const char* bytes, int32_t n) {
+    UErrorCode status = U_ZERO_ERROR;
+    dest_.append(bytes, n, status);
+    // Any errors are silently ignored.
+}
+
+char*
+CharStringByteSink::GetAppendBuffer(int32_t min_capacity,
+                                    int32_t desired_capacity_hint,
+                                    char* scratch,
+                                    int32_t scratch_capacity,
+                                    int32_t* result_capacity) {
+    if (min_capacity < 1 || scratch_capacity < min_capacity) {
+        *result_capacity = 0;
+        return nullptr;
+    }
+
+    UErrorCode status = U_ZERO_ERROR;
+    char* result = dest_.getAppendBuffer(
+            min_capacity,
+            desired_capacity_hint,
+            *result_capacity,
+            status);
+    if (U_SUCCESS(status)) {
+        return result;
+    }
+
+    *result_capacity = scratch_capacity;
+    return scratch;
+}
+
 U_NAMESPACE_END

deps/icu-small/source/common/bytesinkutil.h

@@ -13,6 +13,7 @@
 U_NAMESPACE_BEGIN
 
 class ByteSink;
+class CharString;
 class Edits;
 
 class U_COMMON_API ByteSinkUtil {
@@ -58,4 +59,25 @@ class U_COMMON_API ByteSinkUtil {
                                         ByteSink &sink, uint32_t options, Edits *edits);
 };
 
+class CharStringByteSink : public ByteSink {
+public:
+    CharStringByteSink(CharString* dest);
+    ~CharStringByteSink() override;
+
+    CharStringByteSink() = delete;
+    CharStringByteSink(const CharStringByteSink&) = delete;
+    CharStringByteSink& operator=(const CharStringByteSink&) = delete;
+
+    void Append(const char* bytes, int32_t n) override;
+
+    char* GetAppendBuffer(int32_t min_capacity,
+                          int32_t desired_capacity_hint,
+                          char* scratch,
+                          int32_t scratch_capacity,
+                          int32_t* result_capacity) override;
+
+private:
+    CharString& dest_;
+};
+
 U_NAMESPACE_END

deps/icu-small/source/common/bytestriebuilder.cpp

@@ -339,7 +339,8 @@ BytesTrieBuilder::indexOfElementWithNextUnit(int32_t i, int32_t byteIndex, UChar
 
 BytesTrieBuilder::BTLinearMatchNode::BTLinearMatchNode(const char *bytes, int32_t len, Node *nextNode)
         : LinearMatchNode(len, nextNode), s(bytes) {
-    hash=hash*37+ustr_hashCharsN(bytes, len);
+    hash=static_cast<int32_t>(
+        static_cast<uint32_t>(hash)*37u + static_cast<uint32_t>(ustr_hashCharsN(bytes, len)));
 }
 
 UBool