+/**
+ * Log function for debug messages.
+ * This function is only functional when the program is compiled with debug
+ * code enabled; otherwise it is an empty function which the compiler will
+ * hopefully mangle down to "nothing". Therefore you should use LogDebug(...)
+ * in favor to Log(LOG_DEBUG, ...).
+ * @param Format Format string like printf().
+ * @param ... Further arguments.
+ */