twitter/bootstrap — pull request #4298 by anhulife (2012-08-06 02:52:27+00:00)
Title: move the 'timeout' to the 'self' from the 'this'

The issues will appear if the mouse enters into other elements from the
former elements when the hiding-delay is not the 0s. At the same time,
the 'tooltip' of the former elements won't hide. That's why I move the
'timeout' to the 'self' from the 'this'.