libtool version info

Signed-off-by: Thynson <lanxingcan@gmail.com>
Docs

Signed-off-by: Thynson <lanxingcan@gmail.com>
setup doxygen

Signed-off-by: Thynson <lanxingcan@gmail.com>
move priority queue node from spin_task to spin_timer

Signed-off-by: Thynson <lanxingcan@gmail.com>