Switch libcore to the new icu.

Change-Id: I58ec1fafdf5524538ac14c52d561bf93d5a6c946
diff --git a/luni/src/main/native/sub.mk b/luni/src/main/native/sub.mk
index 88085c6..5b581f3 100644
--- a/luni/src/main/native/sub.mk
+++ b/luni/src/main/native/sub.mk
@@ -57,8 +57,8 @@
     valueOf.cpp \
 
 LOCAL_C_INCLUDES += \
-    external/icu4c/common \
-    external/icu4c/i18n \
+    external/icu/icu4c/source/common \
+    external/icu/icu4c/source/i18n \
     external/openssl/include \
     external/zlib \
     system/core/include \