Fixes the LICENSE files that we ship with our releases:
* the source-distribution license included wrong and unnecessary dependencies
* the binary-distribution license was missing most of our actual dependencies
Reviewers: A. Sophie Blee-Goldman <ableegoldman@apache.org>, Ewen Cheslack-Postava <ewencp@apache.org>, Justin Mclean <jmclean@apache.org>
John Roesler