Auto merge of #4440 - nisargthakkar:publish_target, r=alexcrichton
authorbors <bors@rust-lang.org>
Tue, 29 Aug 2017 17:40:45 +0000 (17:40 +0000)
committerbors <bors@rust-lang.org>
Tue, 29 Aug 2017 17:40:45 +0000 (17:40 +0000)
Adding target support to cargo package and cargo publish

Fixing Issue #4012

Same as #4077 but couldn't reopen the PR due to force push after rebasing from master


Trivial merge