Rename rustdoc lints to be a tool lint instead of built-in.

- Rename `broken_intra_doc_links` to `rustdoc::broken_intra_doc_links`
- Ensure that the old lint names still work and give deprecation errors
- Register lints even when running doctests

  Otherwise, all `rustdoc::` lints would be ignored.

- Register all existing lints as removed

  This unfortunately doesn't work with `register_renamed` because tool
  lints have not yet been registered when rustc is running. For similar
  reasons, `check_backwards_compat` doesn't work either. Call
  `register_removed` directly instead.

- Fix fallout

  + Rustdoc lints for compiler/
  + Rustdoc lints for library/

Note that this does *not* suggest `rustdoc::broken_intra_doc_links` for
`rustdoc::intra_doc_link_resolution_failure`, since there was no time
when the latter was valid.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/test/rustdoc-ui/reference-links.rs b/src/test/rustdoc-ui/reference-links.rs
index 6e00b9f0fa1..e81e034465d 100644
--- a/src/test/rustdoc-ui/reference-links.rs
+++ b/src/test/rustdoc-ui/reference-links.rs
@@ -1,5 +1,5 @@
 // Test that errors point to the reference, not to the title text.
-#![deny(broken_intra_doc_links)]
+#![deny(rustdoc::broken_intra_doc_links)]
 //! Links to [a] [link][a]
 //!
 //! [a]: std::process::Comman