Auto merge of #5491 - ehuss:profile-spec, r=alexcrichton
authorbors <bors@rust-lang.org>
Sun, 6 May 2018 03:56:43 +0000 (03:56 +0000)
committerbors <bors@rust-lang.org>
Sun, 6 May 2018 03:56:43 +0000 (03:56 +0000)
Add package spec support to profile overrides.

Note: It errors out if multiple overrides match the same package.  This could potentially merge the overrides together with a hierarchy similar to CSS specificity.  However, that seems overkill for now.


Trivial merge