Rollup of 7 pull requests#57918

Merged

bors merged 17 commits intorust-lang:masterfrom

Jan 26, 2019

Commits on Jan 15, 2019

stabilize extern_crate_self
mehcode
committed

Commits on Jan 17, 2019

Commits on Jan 19, 2019

Commits on Jan 21, 2019

un-deprecate mem::zeroed
RalfJung
committed

Commits on Jan 22, 2019

Ignore aarch64 in simd-intrinsic-generic-reduction
James Duley
committed

Commits on Jan 25, 2019

#56411 do not suggest a fix for a import conflict in a macro

mockersf
authored and
petrochenkov
committed
Address review comments and cleanup code
petrochenkov
committed

Commits on Jan 26, 2019