NativeBridge: Refactor for new initialization flow

Setup becomes Load, have explicit Initialize and Unload.

Change-Id: I5a20de1cb68dd1802937b369b14c50c9c1031c67
diff --git a/libnativebridge/Android.mk b/libnativebridge/Android.mk
index 9403fd2..3009bb9 100644
--- a/libnativebridge/Android.mk
+++ b/libnativebridge/Android.mk
@@ -36,3 +36,5 @@
 LOCAL_MULTILIB := both
 
 include $(BUILD_HOST_SHARED_LIBRARY)
+
+include $(LOCAL_PATH)/tests/Android.mk
\ No newline at end of file