Update icu4j to 53.1

Change-Id: I42f098e3303bdd0e1ff3d7d6b4947ae5d8190142
diff --git a/common/icu4j/PREBUILT b/common/icu4j/PREBUILT
index 813418a..c145bc6 100644
--- a/common/icu4j/PREBUILT
+++ b/common/icu4j/PREBUILT
@@ -1,4 +1,4 @@
 The objects in this prebuilt directory can be rebuilt
 using the source archive hosted at
 
-http://download.icu-project.org/files/icu4j/50.1.1/icu4j-50_1_1.tgz
+http://download.icu-project.org/files/icu4j/53.1/icu4j-53_1.tgz
diff --git a/common/icu4j/icu4j.jar b/common/icu4j/icu4j.jar
index ac6fa6e..2c3ff8b 100644
--- a/common/icu4j/icu4j.jar
+++ b/common/icu4j/icu4j.jar
Binary files differ