parsec.fileparse: allow empty values

Previously empty values are treated as undefined.
Merge branch 'master' into fix-undef-empty-value
Merge pull request #648 from matthewrmshin/fix-undef-empty-value

parsec.fileparse: allow empty values
Future trigger final-cycle check should ignore async tasks.

Else get an illegal cycle time error. This only applies if the suite has
a stop cycle.
Merge pull request #649 from hjoliver/mixed-suite-reload-revisited

Future trigger final-cycle check should ignore async tasks.