Make a host version of acc for testing.

Don't run the code we've compiled unless the -R option is present.
diff --git a/libacc/tests/Android.mk b/libacc/tests/Android.mk
index 2cff9d3..1e4d328 100644
--- a/libacc/tests/Android.mk
+++ b/libacc/tests/Android.mk
@@ -1,5 +1,9 @@
 LOCAL_PATH:= $(call my-dir)
+
+# Executable for host
+# ========================================================
 include $(CLEAR_VARS)
+LOCAL_MODULE:= acc
 
 LOCAL_SRC_FILES:= \
 	main.cpp
@@ -7,9 +11,22 @@
 LOCAL_SHARED_LIBRARIES := \
     libacc
 
+LOCAL_MODULE_TAGS := tests
+
+include $(BUILD_HOST_EXECUTABLE)
+
+# Executable for target
+# ========================================================
+include $(CLEAR_VARS)
 LOCAL_MODULE:= acc
 
+LOCAL_SRC_FILES:= \
+	main.cpp
+
+LOCAL_SHARED_LIBRARIES := \
+    libacc
+
+
 LOCAL_MODULE_TAGS := tests
 
-include $(BUILD_EXECUTABLE)
-
+include $(BUILD_EXECUTABLE)
\ No newline at end of file