LICENSE-MIT and one source file contain inaccurate copyright notices of
the form "Copyright (c) (years) The Rust Project Developers", which
implies that an entity called "The Rust Project Developers" holds
copyrights in Rust. Rust contributors retain their copyrights, and do
not assign them to anyone by contributing. Remove the inaccurate
notices.
This copies the same Apache and MIT license files from the rust-lang/rust
repository to the cargo repository. It notable retains the same copyright line
as the rust repository:
Copyright (c) 2014 The Rust Project Developers
The COPYRIGHT file from the rust repository was not copied over as it looked
like it mainly contained information about third party dependencies, which cargo
does not have yet.
The wording at the end of the rust repository's README.md was also copied over
to cargo's README.md with tweaks to not mention COPYRIGHT and third-party BSD
licenses.
Closes#34
