Switch to using shared over local code for initializing ICU

A static library now exists in external/icu/android_utils.

Bug: 21730722
Change-Id: I8302b585d3c87fd1a975301ceca4ceebaccbcac9
diff --git a/media/mediaserver/main_mediaserver.cpp b/media/mediaserver/main_mediaserver.cpp
index 27a40b2..4a485ed 100644
--- a/media/mediaserver/main_mediaserver.cpp
+++ b/media/mediaserver/main_mediaserver.cpp
@@ -125,7 +125,7 @@
             prctl(PR_SET_PDEATHSIG, SIGKILL);   // if parent media.log dies before me, kill me also
             setpgid(0, 0);                      // but if I die first, don't kill my parent
         }
-        initializeIcuOrDie();
+        InitializeIcuOrDie();
         sp<ProcessState> proc(ProcessState::self());
         sp<IServiceManager> sm = defaultServiceManager();
         ALOGI("ServiceManager: %p", sm.get());