rustbuild: Build tests with LLD if `use-lld = true` was passed (non-msvc)
rustbuild: Build tests with LLD if `use-lld = true` was passed (non-msvc)

aidancully/rust,aidancully/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust