report improvement more tests Daniel

* schematron.c: report improvement
* test/schematron/zvon* result/schematron/zvon*: more tests
Daniel
diff --git a/test/schematron/zvon5_2.xml b/test/schematron/zvon5_2.xml
new file mode 100644
index 0000000..2a11400
--- /dev/null
+++ b/test/schematron/zvon5_2.xml
@@ -0,0 +1,7 @@
+<AAA>
+     <BBB>
+          <CCC>
+               <DDD/>
+          </CCC>
+     </BBB>
+</AAA>