cleanup of global variables, marking some const or private. Daniel

* include/libxml/parserInternals.h include/libxml/HTMLparser.h
  xmlIO.c tree.c parserInternals.c entities.c encoding.c
  HTMLparser.c: cleanup of global variables, marking some
  const or private.
Daniel
diff --git a/parserInternals.c b/parserInternals.c
index 43b97c4..8a3abd3 100644
--- a/parserInternals.c
+++ b/parserInternals.c
@@ -83,7 +83,7 @@
 }
 
 
-const char *xmlFeaturesList[] = {
+static const char *xmlFeaturesList[] = {
     "validate",
     "load subset",
     "keep blanks",