remove the warning on the 2001 namespace remove some warnings when

* xinclude.c: remove the warning on the 2001 namespace
* parser.c parserInternals.c xpath.c: remove some warnings
  when compiling with MSVC6
* nanohttp.c: applied a patch when using _WINSOCKAPI_
Daniel
diff --git a/parserInternals.c b/parserInternals.c
index 67fbd63..b6601d3 100644
--- a/parserInternals.c
+++ b/parserInternals.c
@@ -1686,7 +1686,7 @@
     if (ctxt->vctxt.nodeTab != NULL) xmlFree(ctxt->vctxt.nodeTab);
     if (ctxt->atts != NULL) xmlFree((xmlChar * *)ctxt->atts);
     if (ctxt->dict != NULL) xmlDictFree(ctxt->dict);
-    if (ctxt->nsTab != NULL) xmlFree(ctxt->nsTab);
+    if (ctxt->nsTab != NULL) xmlFree((char *) ctxt->nsTab);
     if (ctxt->pushTab != NULL) xmlFree(ctxt->pushTab);
     if (ctxt->attallocs != NULL) xmlFree(ctxt->attallocs);
     if (ctxt->attsDefault != NULL)