add license headers and LICENSE file for derive

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) Terts Diepraam
+Copyright (c) uutils developers
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in

derive/LICENSE

@@ -0,0 +1 @@
+../LICENSE

derive/src/argument.rs

@@ -1,3 +1,6 @@
+// For the full copyright and license information, please view the LICENSE
+// file that was distributed with this source code.
+
 use std::ops::RangeInclusive;
 
 use proc_macro2::TokenStream;

derive/src/attributes.rs

@@ -1,3 +1,6 @@
+// For the full copyright and license information, please view the LICENSE
+// file that was distributed with this source code.
+
 use std::ops::RangeInclusive;
 
 use syn::{

derive/src/flags.rs

@@ -1,3 +1,6 @@
+// For the full copyright and license information, please view the LICENSE
+// file that was distributed with this source code.
+
 use proc_macro2::TokenStream;
 use quote::quote;
 

derive/src/help.rs

@@ -1,3 +1,6 @@
+// For the full copyright and license information, please view the LICENSE
+// file that was distributed with this source code.
+
 use std::{
     io::Read,
     path::{Path, PathBuf},

derive/src/help_parser.rs

@@ -1,5 +1,3 @@
-// This file is part of the uutils coreutils package.
-//
 // For the full copyright and license information, please view the LICENSE
 // file that was distributed with this source code.
 

derive/src/initial.rs

@@ -1,3 +1,6 @@
+// For the full copyright and license information, please view the LICENSE
+// file that was distributed with this source code.
+
 use syn::{
     parse::{Parse, ParseStream},
     parse_macro_input, Data, DeriveInput, Fields, Token,

derive/src/lib.rs

@@ -1,3 +1,6 @@
+// For the full copyright and license information, please view the LICENSE
+// file that was distributed with this source code.
+
 mod argument;
 mod attributes;
 mod flags;

src/error.rs

@@ -1,3 +1,6 @@
+// For the full copyright and license information, please view the LICENSE
+// file that was distributed with this source code.
+
 use std::{
     error::Error as StdError,
     ffi::OsString,

src/lib.rs

@@ -1,3 +1,6 @@
+// For the full copyright and license information, please view the LICENSE
+// file that was distributed with this source code.
+
 //! Argument parsing for the uutils coreutils project
 //!
 //! This crate provides the argument parsing for the

src/value.rs

@@ -1,3 +1,6 @@
+// For the full copyright and license information, please view the LICENSE
+// file that was distributed with this source code.
+
 use crate::error::Error;
 use std::{
     ffi::{OsStr, OsString},