develop/ktcc: Post-SVN tidy

- Move source code from `trunk` into program root directory.
- Update build files.

programs/develop/ktcc/libc.obj/source/stdio/debug_printf.c

@@ -0,0 +1,15 @@
+/* Copyright (C) 2021 Logaev Maxim (turbocat2001), GPLv2 */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <limits.h>
+
+void debug_printf(const char *format,...)
+{
+    va_list ap;
+    static char log_board[STDIO_MAX_MEM];
+    va_start (ap, format);
+    vsnprintf(log_board, STDIO_MAX_MEM, format, ap);
+    va_end(ap);
+    _ksys_debug_puts(log_board);
+}