Update MentOs code to the latest development version.

libc/inc/sys/ioctl.h

@@ -0,0 +1,15 @@
+///                MentOS, The Mentoring Operating system project
+/// @file ioctl.h
+/// @brief Input/Output ConTroL (IOCTL) functions.
+/// @copyright (c) 2014-2021 This file is distributed under the MIT License.
+/// See LICENSE.md for details.
+
+#pragma once
+
+/// @brief Perform the I/O control operation specified by REQUEST on FD.
+///   One argument may follow; its presence and type depend on REQUEST.
+/// @param fd      Must be an open file descriptor.
+/// @param request The device-dependent request code
+/// @param data    An untyped pointer to memory.
+/// @return Return value depends on REQUEST. Usually -1 indicates error.
+int ioctl(int fd, unsigned long int request, void *data);