Restore the option to build with CHAR_SIZE being 8, which upstream
seems to have abandoned. We want it to be used with Festival, among
other things.

	-mi	(November 2024)

--- include/ctype16.h	2021-06-14 13:27:08.000000000 -0400
+++ include/ctype16.h	2024-11-19 13:24:35.494673000 -0500
@@ -28,7 +28,10 @@
 #define is_xml_namechar(c,map) (map[(int)(c) & 0xff] & xml_namechar)
 #define is_xml_whitespace(c) (xml_char_map[(int)(c) & 0xff] & xml_whitespace)
+#define is_xml_whitespace_16 is_xml_whitespace
+#define is_xml_namestart_16 is_xml_namestart
+#define is_xml_namechar_16 is_xml_namechar
 
-#define xml_char_map_11 0
-#define xml_char_map_105 0
+#define xml_char_map_11 xml_char_map
+#define xml_char_map_105 xml_char_map
 
 #else