Auto merge of #2842 - alx741:update_manpages, r=alexcrichton
authorbors <bors@rust-lang.org>
Sat, 9 Jul 2016 01:31:21 +0000 (18:31 -0700)
committerGitHub <noreply@github.com>
Sat, 9 Jul 2016 01:31:21 +0000 (18:31 -0700)
Update manpages with new flags

Add the [new flags](http://blog.rust-lang.org/2016/07/07/Rust-1.10.html)


Trivial merge