(main): Don't use access() before mkdir() to check whether the

directory to be created exists, just check errno afterwards.

[_WIN32] (F_OK, W_OK, R_OK): Unused, remove.

include/misc.h

@@ -60,15 +60,6 @@ typedef long ssize_t;
 
 #define strncasecmp(s1, s2, s3) _strnicmp(s1, s2, s3)
 #define mkdir(dir,perm) _mkdir((dir))
-#ifndef F_OK
-#define F_OK 0  /* FILE existence */
-#endif
-#ifndef W_OK
-#define W_OK 02 /* Write permission */
-#endif
-#ifndef R_OK
-#define R_OK 04 /* Read permission */
-#endif
 
 typedef int pid_t;
 #define vsnprintf _vsnprintf