Extend using-for.

test/libsolidity/syntaxTests/using/module_identifier_not_found.sol

@@ -0,0 +1,13 @@
+==== Source: A ====
+function id(uint x) pure returns (uint) {
+    return x;
+}
+
+==== Source: B ====
+import "A" as M;
+
+contract C {
+    using { id } for uint;
+}
+// ----
+// DeclarationError 7920: (B:43-45): Identifier not found or not unique.