win: add misc subsystem

1) Add 'logmgr' module to manage logs.
2) Add 'priority' module to manage priorities.

Signed-off-by: Zhengwang Ruan <ruan.zhengwang@gmail.com>
regress:emulate: sync in wr

Signed-off-by: Zhengwang Ruan <ruan.zhengwang@gmail.com>