Auto merge of #150110 - Urgau:remap-relative-library, r=jieyouxu

Prefer remapping the relative `library/` and `compiler/` directories

This is done to avoid leaking the relative paths to the standard library after the overall of filenames in rust-lang/rust#149709.

Noted that the paths were already leaking before, but to a lesser extent since most (but not all) the paths embedded in the distributed `rlib` were absolute.

In general Cargo compiles workspace members with relative paths, so it's better anyway to remap the relative path.

In addition to our tests I have manually confirmed that it also works as expected for the printed diagnostics paths.

cf. https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/remapping.20of.20the.20standard.20library/near/564093571
tree: bd670b01a4e35acc3fd779897503b7e94f6b0bf5
  1. .cargo/
  2. .github/
  3. .vscode/
  4. assets/
  5. bench_data/
  6. crates/
  7. docs/
  8. editors/
  9. lib/
  10. xtask/
  11. .editorconfig
  12. .git-blame-ignore-revs
  13. .gitattributes
  14. .gitignore
  15. .typos.toml
  16. Cargo.lock
  17. Cargo.toml
  18. clippy.toml
  19. CONTRIBUTING.md
  20. josh-sync.toml
  21. LICENSE-APACHE
  22. LICENSE-MIT
  23. PRIVACY.md
  24. README.md
  25. rust-version
  26. rustfmt.toml
  27. triagebot.toml
README.md

rust-analyzer is a language server that provides IDE functionality for writing Rust programs. You can use it with any editor that supports the Language Server Protocol (VS Code, Vim, Emacs, Zed, etc).

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