Build Contacts against current SDK

Bug:
Change-Id: I31222599eb1da74167c69fdbbaca5590ca603b8a
diff --git a/Android.mk b/Android.mk
index 10178fb..8f34bb9 100644
--- a/Android.mk
+++ b/Android.mk
@@ -36,6 +36,8 @@
 
 LOCAL_PROGUARD_FLAG_FILES := proguard.flags
 
+LOCAL_SDK_VERSION := current
+
 include $(BUILD_PACKAGE)
 
 # Use the folloing include to make our test apk.