5edcf9bc11
Rewrite/reorganize docs for stack size/thread names for spawned threads. * Moves docs about stack size and thread naming from `Builder` to the `std::thread` module * Adds more links to the new module-level documentation * Mentions the 2 MiB stack size default, but indicate it's subject to change Fixes https://github.com/rust-lang/rust/issues/43805.