[llvm] [BOLT] Prevent .rela.plt reordering (PR #207412)

[Alexey Moksyakov via llvm-commits]

yavtuk wrote:

@iluuu1994 good catch, I see your fix uses additional vector to store relocation addresses in order. I looked deeper into the containers we're already using and see we have multiset for section and relocations. I think we might be able to get relocations in order without extra metadata. I'll take a closer look and report back

https://github.com/llvm/llvm-project/pull/207412