develop/ktcc: Post-SVN tidy

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

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

@@ -0,0 +1,30 @@
+/* Copyright (C) 2021 Logaev Maxim (turbocat2001), GPLv2 */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "conio.h"
+#include <sys/ksys.h>
+#include <errno.h>
+#include <limits.h>
+
+int vsprintf(char* s, const char* format, va_list arg)
+{
+    return vsnprintf(s, STDIO_MAX_MEM, format, arg);
+}
+
+int vprintf(const char* format, va_list arg)
+{
+    int len = 0;
+    char* s = malloc(STDIO_MAX_MEM);
+    if (!s) {
+        errno = ENOMEM;
+        return errno;
+    }
+    con_init();
+    len = vsnprintf(s, STDIO_MAX_MEM, format, arg);
+    con_write_string(s, len);
+    free(s);
+    return (len);
+}