[clang] Add support for dynamic libraries in CLANG_BOLT (PR #127020)

[Tom Stellard via cfe-commits]

https://github.com/tstellar commented:

I like the idea here.  I wonder if this could be generalized somehow in `add_llvm_library` so that it could be applied to arbitrary libraries.  I had wanted to try to generalize this for executable in `add_llvm_executable`. 

I'm fine taking this patch as-is without generalizing it, but I'm curious if you think this would work as a follow up change in the future.

https://github.com/llvm/llvm-project/pull/127020