[clang] [clang][MBD] set up module build daemon infrastructure (PR #67562)

[Iain Sandoe via cfe-commits]

https://github.com/iains commented:

I had a couple of questions.  I  guess my main concern here is that the TODO for portability might turn out to be quite heavy lifting.  Perhaps we should be looking to abstract the socket-like interface at a lower level.


https://github.com/llvm/llvm-project/pull/67562