preparing a beta3 solving the ABI problems make sure the global variables

* configure.in: preparing a beta3 solving the ABI problems
* globals.c parser.c parserInternals.c testHTML.c HTMLparser.c SAX.c
  include/libxml/globals.h include/libxml/SAX.h: make sure the
  global variables for the default SAX handler are V1 ones to
  avoid ABI compat problems.
* xmlreader.c: cleanup of uneeded code
* hash.c: fix a comment
Daniel
diff --git a/testHTML.c b/testHTML.c
index e0e5d3d..f48612d 100644
--- a/testHTML.c
+++ b/testHTML.c
@@ -75,7 +75,10 @@
     NULL, /* getParameterEntity */
     NULL, /* cdataBlock */
     NULL, /* externalSubset */
-    1
+    1,
+    NULL,
+    NULL,
+    NULL
 };
 
 xmlSAXHandlerPtr emptySAXHandler = &emptySAXHandlerStruct;
@@ -595,7 +598,10 @@
     getParameterEntityDebug,
     cdataDebug,
     NULL,
-    1
+    1,
+    NULL,
+    NULL,
+    NULL
 };
 
 xmlSAXHandlerPtr debugSAXHandler = &debugSAXHandlerStruct;