Auto merge of #139992 - matthiaskrgr:rollup-ak3uibu, r=matthiaskrgr

Rollup of 8 pull requests

Successful merges:

 - #139351 (Autodiff batching2)
 - #139483 (f*::NAN: guarantee that this is a quiet NaN)
 - #139498 (Ignore zero-sized types in wasm future-compat warning)
 - #139967 (Introduce and use specialized `//@ ignore-auxiliary` for test support files instead of using `//@ ignore-test`)
 - #139969 (update libc)
 - #139971 (Make C string merging test work on MIPS)
 - #139974 (Change `InterpCx::instantiate*` function visibility to pub)
 - #139977 (Fix drop handling in `hint::select_unpredictable`)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors

tests/pass/tls/tls_leak_main_thread_allowed.rs

@@ -13,7 +13,7 @@ pub fn main() {
     TLS.set(Some(Box::leak(Box::new(123))));
 
     // We can only ignore leaks on targets that use `#[thread_local]` statics to implement
-    // `thread_local!`. Ignore the test on targest that don't.
+    // `thread_local!`. Ignore the test on targets that don't.
     if cfg!(target_thread_local) {
         thread_local! {
             static TLS_KEY: Cell<Option<&'static i32>> = Cell::new(None);