more work on the automata interfaces and debug of counted choices added a

* xmlregexp.c xmlschemas.c include/libxml/xmlautomata.h: more work
  on the automata interfaces and debug of counted choices
* test/schemas/* result/schemas/*: added a number of tests
Daniel
diff --git a/test/schemas/choice_5.xml b/test/schemas/choice_5.xml
new file mode 100644
index 0000000..3345a68
--- /dev/null
+++ b/test/schemas/choice_5.xml
@@ -0,0 +1,6 @@
+<doc>
+<a/>
+<b/>
+<a/>
+</doc>
+