Migrate remaining unsafe indexes to safe indexes except File

[kubkon]

This finishes migration of remaining indexes to safe indexes with the exception of File which will be done in a follow-up.

As an interesting observation, I believe that thanks to the rewrite of indexes, bold got a tiny bit faster, dropping below 1s when linking Zig's stage3 compiler (I have used an old setup for Zig so your mileage may vary when tested against up-to-date Zig repo!). Anyhow, the results:

Note that now we've got only Apple rewritten ld to beat!

[kubkon]

This finishes migration of remaining indexes to safe indexes with the exception of File which will be done in a follow-up.

As an interesting observation, I believe that thanks to the rewrite of indexes, bold got a tiny bit faster, dropping below 1s when linking Zig's stage3 compiler (I have used an old setup for Zig so your mileage may vary when tested against up-to-date Zig repo!). Anyhow, the results:

Note that now we've got only Apple rewritten ld to beat!

Actually, I wonder if the speed-up is due to zig-yaml partial rewrite?