cylc/cylc — pull request #580 by matthewrmshin (2013-07-16 08:23:57+00:00)
Title: Fix non-special clock trigger tasks.

Looks like f289273b26056718da530d57efc5a7aa175544ca has broken it the
other way round.

Sorry, but it looks like my previous change has broken other special tasks.

@hjoliver please review.