Chez Scheme: avoid uselocale on more Solaris

A refinment to a86cf525ef, which moves the no-`uselocale`
declaration to a more reliable place.

racket/src/ChezScheme/c/expeditor.c

@@ -539,7 +539,6 @@ static void s_ee_write_char(wchar_t c) {
 # define CHTYPE int
 # include </usr/include/curses.h>
 # include </usr/include/term.h>
-# define NO_USELOCALE
 #elif defined(NETBSD)
 # include <ncurses.h>
 # include <ncurses/term.h>

racket/src/ChezScheme/c/version.h

@@ -384,6 +384,7 @@ typedef int tputsputcchar;
 #define ARCHYPERBOLIC
 #define LOG1P
 #define DEFINE_MATHERR
+#define NO_USELOCALE
 #define GETPAGESIZE() getpagesize()
 typedef char *memcpy_t;
 #define MAKE_NAN(x) { x = 0.0; x = x / x; }