[llvm] [Runtimes] Merge 'compile_commands.json' files from runtimes build (PR #116303)

[Aaron Ballman via llvm-commits]

https://github.com/AaronBallman commented:

I don't feel particularly qualified to accept or reject the changes, but they seem plausible to me FWIW.

https://github.com/llvm/llvm-project/pull/116303