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, 32 deletions

diff --git a/src/test/ui/packed/packed-struct-generic-layout.rs b/src/test/ui/packed/packed-struct-generic-layout.rs
deleted file mode 100644
index e064eede4ce..00000000000
--- a/src/test/ui/packed/packed-struct-generic-layout.rs
+++ /dev/null
@@ -1,32 +0,0 @@
-// run-pass
-#![allow(dead_code)]
-#![allow(overflowing_literals)]
-
-
-use std::mem;
-
-#[repr(packed)]
-struct S<T, S> {
-    a: T,
-    b: u8,
-    c: S
-}
-
-pub fn main() {
-    unsafe {
-        let s = S { a: 0xff_ff_ff_ffu32, b: 1, c: 0xaa_aa_aa_aa as i32 };
-        let transd : [u8; 9] = mem::transmute(s);
-        // Don't worry about endianness, the numbers are palindromic.
-        assert_eq!(transd,
-                   [0xff, 0xff, 0xff, 0xff,
-                    1,
-                    0xaa, 0xaa, 0xaa, 0xaa]);
-
-
-        let s = S { a: 1u8, b: 2u8, c: 0b10000001_10000001 as i16};
-        let transd : [u8; 4] = mem::transmute(s);
-        // Again, no endianness problems.
-        assert_eq!(transd,
-                   [1, 2, 0b10000001, 0b10000001]);
-    }
-}