Synopsis:

        sys_bufrls(buf_handle)

Arguments:

      buf_handle - The handle of the buffer to release.

Description:    This function releases the specified buffer handle back to the pool of free buffers.       Note that all buffers allocated to a task will be automatically released if the task stops or is killed.    This includes if the task chains to another task or if the task restarts.

Return Value:

Will return 0 if the buffer is released or -1 if an invalid handle is given.