[llvm] [BOLT] Report flow conservation scores (PR #127954)

[Amir Ayupov via llvm-commits]

https://github.com/aaupov approved this pull request.

Looks good now, with a couple of minor nits and the comment about whether or not to include stale functions. Please address before landing.

https://github.com/llvm/llvm-project/pull/127954