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_10_1.xml b/test/relaxng/tutor10_10_1.xml
new file mode 100644
index 0000000..607982a
--- /dev/null
+++ b/test/relaxng/tutor10_10_1.xml
@@ -0,0 +1,5 @@
+<a:addressBook xmlns:a="http://www.example.com/addressBook">
+  <a:card xmlns="http://www.example.com/address">
+    <name>foo</name><email>bar</email>
+  </a:card>
+</a:addressBook>