Util/Thread, Game/Thread

Add base thread class.

World and Network now use different working thread.
Framework

Cleanup.

Signed-off-by: Y.Moon <chglove@live.cn>
Shared/DataBase

Fix exception in DataBase destructor.

Signed-off-by: Y.Moon <chglove@live.cn>
Game/World

Cleanup.

Signed-off-by: Y.Moon <chglove@live.cn>
Game/Game

Init Network and World thread.

Signed-off-by: Y.Moon <chglove@live.cn>