on-demand-ify `custom_coerce_unsized_kind` and `inherent-impls`#40683

Merged

bors merged 3 commits intorust-lang:masterfrom

nikomatsakis:incr-comp-coerce-unsized-info

Mar 29, 2017

Commits on Mar 23, 2017

convert `custom_coerce_unsized_kind` into a `coerce_unsized_info`
nikomatsakis
committed
move `check` to the top of the file, where I would expect to find it
nikomatsakis
committed
convert inherent-impl-related things to on-demand queries
nikomatsakis
committed