merge error code fix from RC_1_0

src/lazy_bdecode.cpp

@@ -685,5 +685,12 @@ namespace libtorrent
 		return bdecode_category;
 	}
 
+	namespace bdecode_errors
+	{
+		boost::system::error_code make_error_code(error_code_enum e)
+		{
+			return boost::system::error_code(e, get_bdecode_category());
+		}
+	}
 };