[llvm] [BOLT] Ignore duplicate global symbols (PR #201082)

[Alexey Moksyakov via llvm-commits]

yavtuk wrote:

> There are actually two cases that should be handled differently:
> 
> 1. DSO with symver, tools disambiguate dynamic symbols via `@`/`@@` – _BOLT needs to support this_.

@aaupov I will take a look how to fix related to DSO libs



https://github.com/llvm/llvm-project/pull/201082