make a bound checking more compatible with Windows 64

On Linux 32:   sizeof(long)=32 == sizeof(void *)=32
    on Linux 64:   sizeof(long)=64 == sizeof(void *)=64
    on Windows 64: sizeof(long)=32 != sizeof(void *)=64

tccrun.c

@@ -110,7 +110,7 @@ LIBTCCAPI int tcc_run(TCCState *s1, int argc, char **argv)
     if (s1->do_bounds_check) {
         void (*bound_init)(void);
         void (*bound_exit)(void);
-        void (*bound_new_region)(void *p, unsigned long size);
+        void (*bound_new_region)(void *p, addr_t size);
         int  (*bound_delete_region)(void *p);
         int i;