fix xmlTextReaderSetup() description tests which were apparently never

* xmlreader.c: fix xmlTextReaderSetup() description
* test/relaxng/empty1.rng test/relaxng/comps_0.xml
  test/relaxng/empty1_0.xml test/relaxng/comps.rng
  test/relaxng/empty0.rng test/relaxng/empty0_0.xml
  test/relaxng/empty1_1.xml: tests which were apparently 
  never commited to CVS
Daniel

svn path=/trunk/; revision=3572
diff --git a/test/relaxng/empty1.rng b/test/relaxng/empty1.rng
new file mode 100644
index 0000000..45dceff
--- /dev/null
+++ b/test/relaxng/empty1.rng
@@ -0,0 +1,18 @@
+<grammar xmlns="http://relaxng.org/ns/structure/1.0">
+  <start>
+    <ref name="top"/>
+  </start>
+  <define name="empty">
+    <empty/>
+  </define>
+  <define name="top">
+    <element name="top">
+      <choice>
+        <ref name="empty"/>
+        <element name="a">
+	  <text/>
+        </element>
+      </choice>
+    </element>
+  </define>
+</grammar>