[beta] Rollup backports#55184

Merged

bors merged 7 commits intorust-lang:betafrom

pietroalbini:beta-backports

Oct 18, 2018

Commits on Oct 18, 2018

Updated RELEASES.md for 1.30.0

Aaron Power
authored and
pietroalbini
committed
Use default of preferring static over dynamic linking in rustdoc tests.

pnkfelix
authored and
pietroalbini
committed
Update a rustdoc ui test whose output has changed

alexcrichton
authored and
pietroalbini
committed
Revert "rustc_resolve: move extern_prelude from Resolver to Session."

petrochenkov
authored and
pietroalbini
committed
Copy extern prelude from resolver to global context

petrochenkov
authored and
pietroalbini
committed
resolve: Scale back hard-coded extern prelude additions

petrochenkov
authored and
pietroalbini
committed
resolve: Do not skip extern prelude during speculative resolution

petrochenkov
authored and
pietroalbini
committed