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/result/relaxng/tutor7_1_2.err b/result/relaxng/tutor7_1_2.err
new file mode 100644
index 0000000..2201c4e
--- /dev/null
+++ b/result/relaxng/tutor7_1_2.err
@@ -0,0 +1,5 @@
+Unimplemented block at xmlschemastypes.c:1132
+error detected at relaxng.c:2769
+error detected at relaxng.c:3427
+error detected at relaxng.c:3243
+xmlRelaxNGValidateDefinition(): validated vector : -1