Auto merge of #4241 - Keruspe:rust-1.19.0, r=alexcrichton
authorbors <bors@rust-lang.org>
Sat, 1 Jul 2017 19:47:01 +0000 (19:47 +0000)
committerbors <bors@rust-lang.org>
Sat, 1 Jul 2017 19:47:01 +0000 (19:47 +0000)
[beta] hash '__CARGO_DEFAULT_LIB_METADATA' in metadata for rustc

This is a backport of #4239 for beta


Trivial merge