Update MentOs code to the latest development version.

libc/src/assert.c

@@ -0,0 +1,19 @@
+///                MentOS, The Mentoring Operating system project
+/// @file assert.c
+/// @brief
+/// @copyright (c) 2014-2021 This file is distributed under the MIT License.
+/// See LICENSE.md for details.
+
+#include "assert.h"
+#include "stdlib.h"
+#include "stdio.h"
+
+void __assert_fail(const char *assertion, const char *file, const char *function, unsigned int line)
+{
+    printf("FILE: %s\n"
+           "FUNC: %s\n"
+           "LINE: %d\n\n"
+           "Assertion `%s` failed.\n",
+           file, (function ? function : "NO_FUN"), line, assertion);
+    abort();
+}