Permit stackalloc in nested contexts.#28969

Merged

gafter merged 3 commits intodotnet:features/nested-stackallocfrom gafter:nstackalloc-26759

Aug 14, 2018

+511-235

Commits on Jul 31, 2018

Permit stackalloc in nested contexts.
gafter
committed

Commits on Aug 7, 2018

Remove dead code.
gafter
committed

Commits on Aug 10, 2018

Adjust tests per review comments.
gafter
committed