Auto merge of #5688 - nrc:rls-features, r=alexcrichton
Auto merge of #5688 - nrc:rls-features, r=alexcrichton

Add missing winapi features

To support RLS in Rust repo, features from https://github.com/rust-lang/rust/pull/51677#issuecomment-402781751

r? @alexcrichton

tsurai/cargo,tsurai/cargo,nipunn1313/cargo,vojtechkral/cargo,rustyhorde/cargo,nipunn1313/cargo,rustyhorde/cargo,tshepang/cargo,tshepang/cargo,eminence/cargo,eminence/cargo,tshepang/cargo,rust-lang/cargo,rust-lang/cargo,tsurai/cargo,rust-lang/cargo,eminence/cargo,rust-lang/cargo,tsurai/cargo,nipunn1313/cargo,vojtechkral/cargo,nipunn1313/cargo,vojtechkral/cargo,vojtechkral/cargo,tshepang/cargo,rustyhorde/cargo,tsurai/cargo,rustyhorde/cargo,eminence/cargo