Teach sp<> how to std::move

Arguably we should migrate to std::shared_ptr
but for now make std::vector<sp<>> a bit less
horrible

Change-Id: Ia458a2daff0b656b2f3310b3ea100565ec844c69
diff --git a/libutils/tests/Android.mk b/libutils/tests/Android.mk
index 514f8c1..cb9e8a2 100644
--- a/libutils/tests/Android.mk
+++ b/libutils/tests/Android.mk
@@ -27,6 +27,7 @@
     Looper_test.cpp \
     LruCache_test.cpp \
     String8_test.cpp \
+    StrongPointer_test.cpp \
     Unicode_test.cpp \
     Vector_test.cpp \