More native work.

Implement save/restore of state, and add native APIs for
configuration information.

Change-Id: I2a3ddc2ba605db58d7c8b2b31b9215fb323f90b5
diff --git a/native/android/Android.mk b/native/android/Android.mk
index 950a1e9..bd2b27a 100644
--- a/native/android/Android.mk
+++ b/native/android/Android.mk
@@ -7,6 +7,7 @@
 #
 LOCAL_SRC_FILES:= \
     asset_manager.cpp \
+    configuration.cpp \
     input.cpp \
     looper.cpp \
     native_activity.cpp \