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, 69 deletions

diff --git a/src/test/run-make/coverage/async2.rs b/src/test/run-make/coverage/async2.rs
deleted file mode 100644
index 959d48ce9db..00000000000
--- a/src/test/run-make/coverage/async2.rs
+++ /dev/null
@@ -1,69 +0,0 @@
-// compile-flags: --edition=2018
-
-use core::{
-    future::Future,
-    marker::Send,
-    pin::Pin,
-};
-
-fn non_async_func() {
-    println!("non_async_func was covered");
-    let b = true;
-    if b {
-        println!("non_async_func println in block");
-    }
-}
-
-
-
-
-async fn async_func() {
-    println!("async_func was covered");
-    let b = true;
-    if b {
-        println!("async_func println in block");
-    }
-}
-
-
-
-
-async fn async_func_just_println() {
-    println!("async_func_just_println was covered");
-}
-
-fn main() {
-    println!("codecovsample::main");
-
-    non_async_func();
-
-    executor::block_on(async_func());
-    executor::block_on(async_func_just_println());
-}
-
-mod executor {
-    use core::{
-        future::Future,
-        pin::Pin,
-        task::{Context, Poll, RawWaker, RawWakerVTable, Waker},
-    };
-
-    pub fn block_on<F: Future>(mut future: F) -> F::Output {
-        let mut future = unsafe { Pin::new_unchecked(&mut future) };
-        use std::hint::unreachable_unchecked;
-        static VTABLE: RawWakerVTable = RawWakerVTable::new(
-            |_| unsafe { unreachable_unchecked() }, // clone
-            |_| unsafe { unreachable_unchecked() }, // wake
-            |_| unsafe { unreachable_unchecked() }, // wake_by_ref
-            |_| (),
-        );
-        let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
-        let mut context = Context::from_waker(&waker);
-
-        loop {
-            if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
-                break val;
-            }
-        }
-    }
-}