Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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+Generic `Atomic<T>` for Rust
+============================
+
+[![Build Status](https://travis-ci.org/Amanieu/atomic-rs.svg?branch=master)](https://travis-ci.org/Amanieu/atomic-rs) [![Crates.io](https://img.shields.io/crates/v/atomic.svg)](https://crates.io/crates/atomic)
+
+A Rust library which provides a generic `Atomic<T>` type for all `T: Copy` types, unlike the standard library which only provides a few fixed atomic types (`AtomicBool`, `AtomicIsize`, `AtomicUsize`, `AtomicPtr`).
+
+This library will use native atomic instructions if possible, and will otherwise fall back to a lock-based mechanism. You can use the `Atomic::<T>::is_lock_free()` function to check whether native atomic operations are supported for a given type. Note that a type must have a power-of-2 size and alignment in order to be used by native atomic instructions.
+
+Only a subset of native atomic operations are supported on stable Rust (types which are the same size as `AtomicUsize`), but you can use the `nightly` Cargo feature on a nightly compiler to enable the full range of native atomic instructions. The `nightly` feature also enables `const fn` constructors which allow you to initialize static atomic variables.
+
+This crate uses `#![no_std]` and only depends on libcore.
+
+[Documentation](https://amanieu.github.io/atomic-rs/atomic/index.html)
+
+## Usage
+
+Add this to your `Cargo.toml`:
+
+```toml
+[dependencies]
+atomic = "0.4"
+```
+
+and this to your crate root:
+
+```rust
+extern crate atomic;
+```
+
+To enable nightly-only features, add this to your `Cargo.toml` instead:
+
+```toml
+[dependencies]
+atomic = {version = "0.4", features = ["nightly"]}
+```
+
+## License
+
+Licensed under either of
+
+ * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+ * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+
+at your option.
+
+### Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any
+additional terms or conditions.