Made the char property lookup table constant

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4905 a1c6a512-1295-4272-9138-f99709370657

apps/plugin.h

@@ -178,7 +178,7 @@ struct plugin_api {
     void*  (*memset)(void *dst, int c, size_t length);
     void*  (*memcpy)(void *out, const void *in, size_t n);
 #ifndef SIMULATOR
-    char *_ctype_;
+    const char *_ctype_;
 #endif
 
     /* sound */

firmware/common/ctype.c

@@ -1,6 +1,6 @@
 #include <ctype.h>
 
-char    _ctype_[257]={
+const char _ctype_[257]={
 	0,
     _C,	_C,	_C,	_C,	_C,	_C,	_C,	_C,
 	_C,	_C|_S,	_C|_S,	_C|_S,	_C|_S,	_C|_S,	_C,	_C,

firmware/include/ctype.h

@@ -39,7 +39,7 @@ int _EXFUN(_toupper, (int __c));
 #ifdef PLUGIN
 #define _ctype_ (rb->_ctype_)
 #else
-extern	char	_ctype_[];
+extern	const char _ctype_[];
 #endif
 
 #ifndef __cplusplus