[clang] [clang-tools-extra] [llvm] [OptTable] Store Info strings in the string table (PR #218845)

[Alexis Engelke via cfe-commits]

aengelke wrote:

I guess this only improves relocations but not .data.rel.ro size and the c-t-t size wins come largely from the fact that c-t-t uses rela instead of relr?

https://github.com/llvm/llvm-project/pull/218845