Added back the O_BINARY #ifdef.

syscall.c

@@ -85,10 +85,10 @@ int do_open(char *pathname, int flags, mode_t mode)
 	    if (dry_run) return -1;
 	    CHECK_RO
 	}
-
+#ifdef O_BINARY
 	/* for Windows */
 	flags |= O_BINARY;
-
+#endif
 	/* some systems can't handle a double / */
 	if (pathname[0] == '/' && pathname[1] == '/') pathname++;