check all the namespace support was actually correct based on tutorial

* test/relaxng/* result/relaxng/*: check all the namespace support
  was actually correct based on tutorial section 10.
Daniel
diff --git a/test/relaxng/tutor10_7.rng b/test/relaxng/tutor10_7.rng
new file mode 100644
index 0000000..ce93df7
--- /dev/null
+++ b/test/relaxng/tutor10_7.rng
@@ -0,0 +1,9 @@
+<element name="addressBook" ns="http://www.example.com"
+         xmlns="http://relaxng.org/ns/structure/1.0">
+  <zeroOrMore>
+    <element name="card">
+      <attribute name="name"/>
+      <attribute name="email"/>
+    </element>
+  </zeroOrMore>
+</element>