Fix FrameworksServicesTests.apk to include libc++.so

libc++.so is no longer accessible to the app, so it must be
bundled in the app. This should get ApfTest passing again.

Change-Id: Ide004cb84f7f50feffb8f5acb46b7001dcffd208
diff --git a/services/tests/servicestests/Android.mk b/services/tests/servicestests/Android.mk
index 14d8b30..1ef7656 100644
--- a/services/tests/servicestests/Android.mk
+++ b/services/tests/servicestests/Android.mk
@@ -27,6 +27,7 @@
 
 LOCAL_JNI_SHARED_LIBRARIES := \
     libapfjni \
+    libc++ \
     libnativehelper
 
 include $(BUILD_PACKAGE)