…ic_task_queue, r=jethrogb

Fix `mut` static task queue in SGX target

[PR 125046](rust-lang#125046) prevents mutable references to statics with `#[linkage]`. Such a construct was used with the tests for the `x86_64-fortanix-unknown-sgx` target. This PR fixes this and cleans up code a bit in 5 steps. Each step passes CI:

- The `mut` static is removed, and `Task` explicitly implements `Send`
- Renaming of the `task_queue::lock` function
- Pass function for `Thread` as `Send` to `Thread::imp` and update when `Packet<'scope, T>` implements `Sync`
- Storing `Task::p` as a type that implements `Send`
- Letting the compiler auto implement `Send` for `Task`

cc: `@jethrogb`

…f, r=Urgau

Allow static mut definitions with #[linkage]

Unlike static declarations with #[linkage], for definitions rustc doesn't rewrite it to add an extra indirection.

This was accidentally disallowed in rust-lang#125046.

cc rust-lang#125800 (comment)

Rollup of 7 pull requests

Successful merges:

 - rust-lang#125273 (bootstrap: implement new feature `bootstrap-self-test`)
 - rust-lang#125800 (Fix `mut` static task queue in SGX target)
 - rust-lang#125903 (rustc_span: Inline some hot functions)
 - rust-lang#125920 (Allow static mut definitions with #[linkage])
 - rust-lang#125921 (coverage: Carve out hole spans in a separate early pass)
 - rust-lang#125995 (Use inline const blocks to create arrays of `MaybeUninit`.)
 - rust-lang#125996 (Closures are recursively reachable)

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

…f, r=Urgau

Allow static mut definitions with #[linkage]

Unlike static declarations with #[linkage], for definitions rustc doesn't rewrite it to add an extra indirection.

This was accidentally disallowed in rust-lang#125046.

cc rust-lang#125800 (comment)

Rollup merge of rust-lang#125920 - bjorn3:allow_static_mut_linkage_def, r=Urgau

Allow static mut definitions with #[linkage]

Unlike static declarations with #[linkage], for definitions rustc doesn't rewrite it to add an extra indirection.

This was accidentally disallowed in rust-lang#125046.

cc rust-lang#125800 (comment)

…iaskrgr

Rollup of 9 pull requests

Successful merges:

 - rust-lang#124840 (resolve: mark it undetermined if single import is not has any bindings)
 - rust-lang#125622 (Winnow private method candidates instead of assuming any candidate of the right name will apply)
 - rust-lang#125648 (Remove unused(?) `~/rustsrc` folder from docker script)
 - rust-lang#125672 (Add more ABI test cases to miri (RFC 3391))
 - rust-lang#125800 (Fix `mut` static task queue in SGX target)
 - rust-lang#125871 (Orphanck[old solver]: Consider opaque types to never cover type parameters)
 - rust-lang#125893 (Handle all GVN binops in a single place.)
 - rust-lang#126008 (Port `tests/run-make-fulldeps/issue-19371` to ui-fulldeps)
 - rust-lang#126032 (Update description of the `IsTerminal` example)

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

Rollup merge of rust-lang#125800 - fortanix:raoul/rte-99-fix_mut_static_task_queue, r=jethrogb

Fix `mut` static task queue in SGX target

[PR 125046](rust-lang#125046) prevents mutable references to statics with `#[linkage]`. Such a construct was used with the tests for the `x86_64-fortanix-unknown-sgx` target. This PR fixes this and cleans up code a bit in 5 steps. Each step passes CI:

- The `mut` static is removed, and `Task` explicitly implements `Send`
- Renaming of the `task_queue::lock` function
- Pass function for `Thread` as `Send` to `Thread::imp` and update when `Packet<'scope, T>` implements `Sync`
- Storing `Task::p` as a type that implements `Send`
- Letting the compiler auto implement `Send` for `Task`

cc: ``@jethrogb``