Allow giflib to be built unbundled

Change-Id: I229a3e2f606bac8021de513f0ee14afea86e74fc
diff --git a/Android.mk b/Android.mk
index 2453314..8a1f838 100644
--- a/Android.mk
+++ b/Android.mk
@@ -1,6 +1,8 @@
 LOCAL_PATH:= $(call my-dir)
 include $(CLEAR_VARS)
 
+LOCAL_SDK_VERSION := 9
+
 LOCAL_SRC_FILES := \
 	dgif_lib.c \
 	gifalloc.c \