Revert restrictions on custom Promise in async function return type#6967

Merged

rbuckton merged 2 commits intorelease-1.8from

revertNoCustomPromise

Feb 9, 2016

Commits on Feb 8, 2016

Revert default behavior to allow custom Promise return types for async functions.
rbuckton
committed

Commits on Feb 9, 2016

Added test for noCustomAsyncPromise switch
rbuckton
committed