async-llvm(6): Make the LLVM work coordinator get its work package through a channel instead of upfront.
async-llvm(6): Make the LLVM work coordinator get its work package through a channel instead of upfront.

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