Changed all (?) occurences where validation macros (IS_xxx) had

* include/libxml/parserInternals.h HTMLparser.c HTMLtree.c
  SAX2.c catalog.c debugXML.c entities.c parser.c relaxng.c
  testSAX.c tree.c valid.c xmlschemas.c xmlschemastypes.c
  xpath.c: Changed all (?) occurences where validation macros
  (IS_xxx) had single-byte arguments to use IS_xxx_CH instead
  (e.g. IS_BLANK changed to IS_BLANK_CH).  This gets rid of
  many warning messages on certain platforms, and also high-
  lights places in the library which may need to be enhanced
  for proper UTF8 handling.
diff --git a/xmlschemas.c b/xmlschemas.c
index 76c41af..7c6c5fb 100644
--- a/xmlschemas.c
+++ b/xmlschemas.c
@@ -889,7 +889,7 @@
     if (str == NULL)
         return (1);
     while (*str != 0) {
-        if (!(IS_BLANK(*str)))
+        if (!(IS_BLANK_CH(*str)))
             return (0);
         str++;
     }
@@ -1269,13 +1269,13 @@
     }
 
     cur = val;
-    while (IS_BLANK(*cur))
+    while (IS_BLANK_CH(*cur))
         cur++;
     while ((*cur >= '0') && (*cur <= '9')) {
         ret = ret * 10 + (*cur - '0');
         cur++;
     }
-    while (IS_BLANK(*cur))
+    while (IS_BLANK_CH(*cur))
         cur++;
     if (*cur != 0) {
         xmlSchemaPErr(ctxt, node, XML_SCHEMAP_INVALID_MAXOCCURS,
@@ -1307,13 +1307,13 @@
         return (1);
 
     cur = val;
-    while (IS_BLANK(*cur))
+    while (IS_BLANK_CH(*cur))
         cur++;
     while ((*cur >= '0') && (*cur <= '9')) {
         ret = ret * 10 + (*cur - '0');
         cur++;
     }
-    while (IS_BLANK(*cur))
+    while (IS_BLANK_CH(*cur))
         cur++;
     if (*cur != 0) {
         xmlSchemaPErr(ctxt, node, XML_SCHEMAP_INVALID_MINOCCURS,
@@ -4549,10 +4549,10 @@
         }
         cur = value;
         do {
-            while (IS_BLANK(*cur))
+            while (IS_BLANK_CH(*cur))
                 cur++;
             end = cur;
-            while ((*end != 0) && (!(IS_BLANK(*end))))
+            while ((*end != 0) && (!(IS_BLANK_CH(*end))))
                 end++;
             if (end == cur)
                 break;