more work on Relax-NG augmented/updated the regression tests added a

* relaxng.c: more work on Relax-NG
* test/relaxng/* result/relaxng/*: augmented/updated the
  regression tests
* xmlschemastypes.c: added a number of base type definition but not
  the associated checks, those are still TODOs
Daniel
diff --git a/test/relaxng/tutor7_1_3.xml b/test/relaxng/tutor7_1_3.xml
new file mode 100644
index 0000000..f9eeb5c
--- /dev/null
+++ b/test/relaxng/tutor7_1_3.xml
@@ -0,0 +1 @@
+<vector>1.2 3.4 5.6</vector>