include seems to work okay now augmented/updated the regression tests

* relaxng: include seems to work okay now
* test/relaxng/* result/relaxng/*: augmented/updated the
  regression tests
Daniel
diff --git a/test/relaxng/tutor9_12.rng b/test/relaxng/tutor9_12.rng
new file mode 100644
index 0000000..be10b85
--- /dev/null
+++ b/test/relaxng/tutor9_12.rng
@@ -0,0 +1,22 @@
+<grammar xmlns="http://relaxng.org/ns/structure/1.0">
+
+  <start>
+    <element name="addressBook">
+      <zeroOrMore>
+	<element name="card">
+	  <ref name="cardContent"/>
+	</element>
+      </zeroOrMore>
+    </element>
+  </start>
+
+  <define name="cardContent">
+    <element name="name">
+      <text/>
+    </element>
+    <element name="emailAddress">
+      <text/>
+    </element>
+  </define>
+
+</grammar>