adjust root folder

ports/dos/stdbool.h

@@ -0,0 +1,20 @@
+#ifndef _STDBOOL_H
+#define _STDBOOL_H
+
+/* C99 Boolean types for compilers without C99 support */
+/* http://www.opengroup.org/onlinepubs/009695399/basedefs/stdbool.h.html */
+#if !defined(__cplusplus)
+
+#if !defined(__GNUC__)
+/* _Bool builtin type is included in GCC */
+typedef enum { _Bool_must_promote_to_int = -1, false = 0, true = 1 } _Bool;
+#endif
+
+#define bool _Bool
+#define true 1
+#define false 0
+#define __bool_true_false_are_defined 1
+
+#endif
+
+#endif