[llvm] [CAS] Add OnDiskGraphDB and OnDiskKeyValueDB (PR #114102)

[Paul Osmialowski via llvm-commits]

pawosm-arm wrote:

> It seems only when using `gcc`, not `clang`

Makes sense, notice that on us it happens as we're testing the bootstrap compiler, which has been built with gcc/g++.

https://github.com/llvm/llvm-project/pull/114102