- Fixed removeFilters() so it can't be used to remove the default filters.
- Fixed removeFilters() so it can't be used to remove the default filters.

- Remove the tickEvent cruft from addEvents()

- Added an idle attribute to mark when the stream thread is waiting on
  notification from its filters

--HG--
extra : convert_revision : svn%3A39a105f4-52d6-0310-bb1b-d6517044f2e4/trunk%40152

ged/mues