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, 37 deletions

diff --git a/src/test/rustdoc/primitive-reference.rs b/src/test/rustdoc/primitive-reference.rs
deleted file mode 100644
index ea8d2d16602..00000000000
--- a/src/test/rustdoc/primitive-reference.rs
+++ /dev/null
@@ -1,37 +0,0 @@
-#![crate_name = "foo"]
-
-#![feature(rustdoc_internals)]
-
-// @has foo/index.html
-// @has - '//h2[@id="primitives"]' 'Primitive Types'
-// @has - '//a[@href="primitive.reference.html"]' 'reference'
-// @has - '//div[@class="sidebar-elems"]//li/a' 'Primitive Types'
-// @has - '//div[@class="sidebar-elems"]//li/a/@href' '#primitives'
-// @has foo/primitive.reference.html
-// @has - '//a[@class="primitive"]' 'reference'
-// @has - '//h1[@class="fqn"]' 'Primitive Type reference'
-// @has - '//section[@id="main-content"]//div[@class="docblock"]//p' 'this is a test!'
-
-// There should be only one implementation listed.
-// @count - '//*[@class="impl has-srclink"]' 1
-// @has - '//*[@id="impl-Foo%3C%26A%3E-for-%26B"]/*[@class="code-header"]' \
-//        'impl<A, B> Foo<&A> for &B'
-#[doc(primitive = "reference")]
-/// this is a test!
-mod reference {}
-
-pub struct Bar;
-
-// This implementation should **not** show up.
-impl<T> From<&T> for Bar {
-    fn from(s: &T) -> Self {
-        Bar
-    }
-}
-
-pub trait Foo<T> {
-    fn stuff(&self, other: &T) {}
-}
-
-// This implementation should show up.
-impl<A, B> Foo<&A> for &B {}