Add in build rule to build guava as a host side library as well as a device side library.

Change-Id: Ic312772fe0fa0f1584e30291945fcf9aa8724291
diff --git a/Android.mk b/Android.mk
index 8e0935b..0970af0 100644
--- a/Android.mk
+++ b/Android.mk
@@ -24,3 +24,12 @@
 
 # Include this library in the build server's output directory
 $(call dist-for-goals, droid, $(LOCAL_BUILT_MODULE):guava.jar)
+
+# Also build a host-side library
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := $(call all-java-files-under, src)
+LOCAL_MODULE := guavalib
+LOCAL_STATIC_JAVA_LIBRARIES := jsr305lib
+
+include $(BUILD_HOST_JAVA_LIBRARY)