SilcThread silc_thread_create(SilcThreadStart start_func,
                                  void *context, bool waitable);

    Creates a new thread. The `start_func' with `context' will be
    called if the thread was created. This function returns a pointer
    to the thread or NULL if the thread could not be created.  All
    resources of the returned pointer is freed automatically when the
    thread exits.

    If the `waitable' is set to TRUE then another thread can wait
    this thread's destruction with silc_thread_wait. If it is set to
    FALSE the thread is not waitable.

    If the `waitable' is TRUE the thread's resources are not freed
    when it exits until another thread has issued silc_thread_wait.
    If the `waitable' is TRUE then another thread must always issue
    silc_thread_wait to avoid memory leaks.