`task.dependencies` is part of the internal taskgraph calculations, so it must
only refer to tasks that are being created, and not to those which already
exist. `task.task['dependencies']`, on the other hand, is what is given to
`queue.createTask` and expresses all dependencies.
MozReview-Commit-ID: GJ6JVj6JMBz
--HG--
extra : rebase_source : 553aec85134fe0e41c53f917327b13d1b66592aa
Graph morphs modify the graph after optimization, without changing its meaning.
In this case, that means adding index tasks that will insert paths into the
index beyond the relatively limited number afforded in task.routes.
MozReview-Commit-ID: AJy4exX7q2v
--HG--
extra : rebase_source : d61e7462defd41e7112739fb057edb493f495430
extra : source : c580568ed47c1ed2af40d98b47fbb0d136e63060
Dustin J. Mitchell
Justin Wood