Auto merge of #106458 - albertlarsan68:move-tests, r=jyn514

Move src/test to the root

See MCP at rust-lang/compiler-team#573

There may be more changes needed.

The first commit is just the move of the files:
You can check that the first commit did not do anything else than renames by running
```
git diff --diff-filter=r -M100% <rust-lang remote>/master <first commit hash>
```
The output should be empty, because the filter excludes renames, and the match threshold for qualifying a rename is 100%.

The second one is mostly a "find and replace" of `src/test` to `tests` and whatever is needed to make CI pass.

What is left to do:
---

- [x] Move directory
- [ ] Change references to `src/test`
    - [x] Change references in-tree
    - [ ] Change references in submodules / out-of-tree docs
- [x] Make CI pass:
    - [x] Fix tidy
    - [x] Fix tests
    - [x] Bless tests if needed (shouldn't normally)
- [ ] Merge it !

1 files changed, 0 insertions, 24 deletions

diff --git a/src/test/rustdoc/process-termination.rs b/src/test/rustdoc/process-termination.rs
deleted file mode 100644
index 32258792b6e..00000000000
--- a/src/test/rustdoc/process-termination.rs
+++ /dev/null
@@ -1,24 +0,0 @@
-// compile-flags:--test
-
-/// A check of using various process termination strategies
-///
-/// # Examples
-///
-/// ```rust
-/// assert!(true); // this returns `()`, all is well
-/// ```
-///
-/// You can also simply return `Ok(())`, but you'll need to disambiguate the
-/// type using turbofish, because we cannot infer the type:
-///
-/// ```rust
-/// Ok::<(), &'static str>(())
-/// ```
-///
-/// You can err with anything that implements `Debug`:
-///
-/// ```rust,should_panic
-/// Err("This is returned from `main`, leading to panic")?;
-/// Ok::<(), &'static str>(())
-/// ```
-pub fn check_process_termination() {}