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, 44 deletions

diff --git a/src/test/rustdoc/structfields.rs b/src/test/rustdoc/structfields.rs
deleted file mode 100644
index 7e1cada4b98..00000000000
--- a/src/test/rustdoc/structfields.rs
+++ /dev/null
@@ -1,44 +0,0 @@
-// @has structfields/struct.Foo.html
-pub struct Foo {
-    // @has - //pre "pub a: ()"
-    pub a: (),
-    // @has - //pre "/* private fields */"
-    // @!has - //pre "b: ()"
-    b: (),
-    // @!has - //pre "c: usize"
-    #[doc(hidden)]
-    c: usize,
-    // @has - //pre "pub d: usize"
-    pub d: usize,
-}
-
-// @has structfields/struct.Bar.html
-pub struct Bar {
-    // @has - //pre "pub a: ()"
-    pub a: (),
-    // @!has - //pre "/* private fields */"
-}
-
-// @has structfields/enum.Qux.html
-pub enum Qux {
-    Quz {
-        // @has - //pre "a: ()"
-        a: (),
-        // @!has - //pre "b: ()"
-        #[doc(hidden)]
-        b: (),
-        // @has - //pre "c: usize"
-        c: usize,
-        // @has - //pre "/* private fields */"
-    },
-}
-
-// @has structfields/struct.Baz.html //pre "pub struct Baz { /* private fields */ }"
-pub struct Baz {
-    x: u8,
-    #[doc(hidden)]
-    pub y: u8,
-}
-
-// @has structfields/struct.Quux.html //pre "pub struct Quux {}"
-pub struct Quux {}