Add RetargetCallback().

include/zipr_plugin.h

@@ -63,6 +63,10 @@ class ZiprPluginInterface_t
 		{
 			return None;
 		}
+		virtual ZiprPreference RetargetCallback(const RangeAddress_t &, Zipr_SDK::DollopEntry_t *, RangeAddress_t &)
+		{
+			return None;
+		}
 };
 
 }