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, 25 deletions

diff --git a/src/test/run-make/coverage/nested_loops.rs b/src/test/run-make/coverage/nested_loops.rs
deleted file mode 100644
index 4c7c7842796..00000000000
--- a/src/test/run-make/coverage/nested_loops.rs
+++ /dev/null
@@ -1,25 +0,0 @@
-fn main() {
-    let is_true = std::env::args().len() == 1;
-    let mut countdown = 10;
-
-    'outer: while countdown > 0 {
-        let mut a = 100;
-        let mut b = 100;
-        for _ in 0..50 {
-            if a < 30 {
-                break;
-            }
-            a -= 5;
-            b -= 5;
-            if b < 90 {
-                a -= 10;
-                if is_true {
-                    break 'outer;
-                } else {
-                    a -= 2;
-                }
-            }
-        }
-        countdown -= 1;
-    }
-}