ELF: Store EhInputSection relocations to simplify code. NFC#161041

MaskRay merged 3 commits intomainllvm/llvm-project:mainfrom

users/MaskRay/spr/elf-store-ehinputsection-relocations-to-simplify-code-nfcllvm/llvm-project:users/MaskRay/spr/elf-store-ehinputsection-relocations-to-simplify-code-nfcCopy head branch name to clipboard