rust/hg-core/src/config.rs

dirstate-item: implement `from_p2` in a simpler way

We can simply use the underlying attribute.

Differential Revision: https://phab.mercurial-scm.org/D11368

// config.rs
//
// Copyright 2020
//      Valentin Gatien-Baron,
//      Raphaël Gomès <[e-mail]>
//
// This software may be used and distributed according to the terms of the
// GNU General Public License version 2 or any later version.

//! Mercurial config parsing and interfaces.

mod config;
mod layer;
mod values;
pub use config::{Config, ConfigSource, ConfigValueParseError};
pub use layer::{ConfigError, ConfigParseError};