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/xmlIO.c b/xmlIO.c
index 2922932..db245d0 100644
--- a/xmlIO.c
+++ b/xmlIO.c
@@ -96,9 +96,9 @@
 
 #define MAX_INPUT_CALLBACK 15
 
-xmlInputCallback xmlInputCallbackTable[MAX_INPUT_CALLBACK];
-int xmlInputCallbackNr = 0;
-int xmlInputCallbackInitialized = 0;
+static xmlInputCallback xmlInputCallbackTable[MAX_INPUT_CALLBACK];
+static int xmlInputCallbackNr = 0;
+static int xmlInputCallbackInitialized = 0;
 
 /*
  * Output I/O callback sets
@@ -112,9 +112,9 @@
 
 #define MAX_OUTPUT_CALLBACK 15
 
-xmlOutputCallback xmlOutputCallbackTable[MAX_OUTPUT_CALLBACK];
-int xmlOutputCallbackNr = 0;
-int xmlOutputCallbackInitialized = 0;
+static xmlOutputCallback xmlOutputCallbackTable[MAX_OUTPUT_CALLBACK];
+static int xmlOutputCallbackNr = 0;
+static int xmlOutputCallbackInitialized = 0;
 
 /************************************************************************
  *									*