CUG updates post #1056
Update runahead limiting and internal queues documentation.
Removed "Section" from references in the CUG.
Corrected two LaTeX references.
Typo fixed.
Clock-trigger offsets as ISO8601 duration.
Bug fix previous.
Changed clock trigger offset format for the iso test.
Consistent clock-trigger validation errors.
Fixed bug revealed by test battery.
Merge pull request #1059 from hjoliver/1029.clock-trigger-interval

clock trigger offset as duration
Merge pull request #1058 from hjoliver/more-cug-updates

Some User Guide Updates