Auto merge of #2703 - alexcrichton:target-dir-abs-path, r=alexcrichton
authorbors <bors@rust-lang.org>
Wed, 18 May 2016 18:18:39 +0000 (11:18 -0700)
committerbors <bors@rust-lang.org>
Wed, 18 May 2016 18:18:39 +0000 (11:18 -0700)
Fix relative `build.target-dir` configuration

Closes #2700


Trivial merge