"" is a valid hexbinary string dixit xmlschema-dev update the test. added

* xmlschemastypes.c: "" is a valid hexbinary string dixit xmlschema-dev
* result/schemas/hexbinary_0_1.err test/schemas/hexbinary_1.xml:
  update the test.
* test/ns5 result//ns5*: added a test for the namespace bug fixed
  in previous commit.
* Makefile.am: added a message in the regression tests
Daniel
diff --git a/Makefile.am b/Makefile.am
index ff2ff61..2972366 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -967,6 +967,7 @@
 	    PYTHONPATH=$(top_builddir)/python:$(top_builddir)/python/.libs:$$PYTHONPATH; \
 	    export PYTHONPATH; \
 	    echo "## XML Schemas datatypes Python based test suite" ; \
+	    echo "## It is normal to see 6 errors reported" ; \
 	    $(CHECKER) $(PYTHON) $(srcdir)/check-xsddata-test-suite.py ; \
 	  fi)