Auto merge of #3177 - matklad:kill-exec-engine, r=alexcrichton
authorbors <bors@rust-lang.org>
Fri, 7 Oct 2016 18:41:31 +0000 (11:41 -0700)
committerGitHub <noreply@github.com>
Fri, 7 Oct 2016 18:41:31 +0000 (11:41 -0700)
Remove ExecEngine abstraction

Hi! Not sure what was the idea behind exec engine (perhaps to allow swapping it out during tests?), but looks like it does absolutely nothing at the moment, and can be removed.


Trivial merge