Auto merge of #5587 - matklad:rustdoc-target, r=alexcrichton
authorbors <bors@rust-lang.org>
Mon, 28 May 2018 16:49:15 +0000 (16:49 +0000)
committerbors <bors@rust-lang.org>
Mon, 28 May 2018 16:49:15 +0000 (16:49 +0000)
Support `--target` argument in `cargo rustdoc`

We don't support `--target` in `cargo rustdoc`. Seems like an omission to me? We support it in `cargo rustc`. Discovered in https://github.com/rust-lang/cargo/pull/5543#issuecomment-392525154.


Trivial merge