Convert Dependency Graph Tasks from `in_task`s to `with_task`s#40376

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cramertj wants to merge 4 commits intorust-lang:masterfrom cramertj:incr-comp-isolate-tasks

+628-394

Commits on Mar 8, 2017

isolate dep-graph tasks

nikomatsakis
authored and
cramertj
committed
add comments and remove unused code paths

nikomatsakis
authored and
cramertj
committed
convert a few uses of in_task to use with_task

nikomatsakis
authored and
cramertj
committed
Convert more instances of in_task to with_task
cramertj
committed