Update ICU to 54.1 step 1

source/common/utrie2.cpp

Index: source/common/utrie2.cpp
diff --git a/source/common/utrie2.cpp b/source/common/utrie2.cpp
index 86b6a774557622ba8783ca0652147fe87a73040b..5f873c5cac08257b0359ff634d91e062123e8093 100644
--- a/source/common/utrie2.cpp
+++ b/source/common/utrie2.cpp
@@ -1,7 +1,7 @@
 /*
 ******************************************************************************
 *
-*   Copyright (C) 2001-2013, International Business Machines
+*   Copyright (C) 2001-2014, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 ******************************************************************************
@@ -399,6 +399,35 @@ utrie2_getVersion(const void *data, int32_t length, UBool anyEndianOk) {
     return 0;
 }
 
+U_CAPI UBool U_EXPORT2
+utrie2_isFrozen(const UTrie2 *trie) {
+    return (UBool)(trie->newTrie==NULL);
+}
+
+U_CAPI int32_t U_EXPORT2
+utrie2_serialize(const UTrie2 *trie,
+                 void *data, int32_t capacity,
+                 UErrorCode *pErrorCode) {
+    /* argument check */
+    if(U_FAILURE(*pErrorCode)) {
+        return 0;
+    }
+
+    if( trie==NULL || trie->memory==NULL || trie->newTrie!=NULL ||
+        capacity<0 || (capacity>0 && (data==NULL || (U_POINTER_MASK_LSB(data, 3)!=0)))
+    ) {
+        *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR;
+        return 0;
+    }
+
+    if(capacity>=trie->length) {
+        uprv_memcpy(data, trie->memory, trie->length);
+    } else {
+        *pErrorCode=U_BUFFER_OVERFLOW_ERROR;
+    }
+    return trie->length;
+}
+
 U_CAPI int32_t U_EXPORT2
 utrie2_swap(const UDataSwapper *ds,
             const void *inData, int32_t length, void *outData,