Relicense clippy

Documentation on relicensing in previous commit

Fixes #2885

Also fixes #3093, fixes #3094, fixes 3095, fixes #3096, fixes #3097, fixes #3098,
fixes #3099, fixes #3100, fixes #3230

Author: Manishearth

Cargo.toml

@@ -11,7 +11,7 @@ authors = [
 description = "A bunch of helpful lints to avoid common pitfalls in Rust"
 repository = "https://github.com/rust-lang-nursery/rust-clippy"
 readme = "README.md"
-license = "MPL-2.0"
+license = "MIT/Apache-2.0"
 keywords = ["clippy", "lint", "plugin"]
 categories = ["development-tools", "development-tools::cargo-plugins"]
 build = "build.rs"

LICENSE

@@ -5,7 +5,7 @@ We are currently in the process of discussing Clippy 1.0 via the RFC process in
 [![Build Status](https://travis-ci.org/rust-lang-nursery/rust-clippy.svg?branch=master)](https://travis-ci.org/rust-lang-nursery/rust-clippy)
 [![Windows Build status](https://ci.appveyor.com/api/projects/status/id677xpw1dguo7iw?svg=true)](https://ci.appveyor.com/project/rust-lang-libs/rust-clippy)
 [![Current Version](https://meritbadge.herokuapp.com/clippy)](https://crates.io/crates/clippy)
-[![License: MPL-2.0](https://img.shields.io/crates/l/clippy.svg)](#license)
+[![License: MIT/Apache-2.0](https://img.shields.io/crates/l/clippy.svg)](#license)
 
 A collection of lints to catch common mistakes and improve your [Rust](https://github.com/rust-lang/rust) code.