#include <runetype.h> directly for the definition of _CACHED_RUNES, needed

by ldef.h, rather than relying on GCC-specific pollution from <ctype.h>.

Noticed by:	Stefan Farfeleder

usr.bin/mklocale/lex.l

@@ -45,6 +45,7 @@ static char sccsid[] = "@(#)lex.l	8.1 (Berkeley) 6/6/93";
 __FBSDID("$FreeBSD$");
 
 #include <ctype.h>
+#include <runetype.h>
 #include <stdio.h>
 #include <stdlib.h>