Peter Hutterer 273890924b input: reduce the number of superfluous hierarchy events ...

There's only two reasons for hierarchy events:
- device is added, removed, etc. In this case we want to send the event as
  it happens.
- devices are added in a XIChangeDeviceHierarchy request. In this case we
  only want one event cumulating all changes.

2009-05-16 12:20:58 +10:00

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