Patch Set 1: No score; IP review completed

Please comment if we need an explicit mapping from authors to company copyright headers and how that could look like.

I left out the contributors section (other projects also seem to not use that) and the Foundation's copyright (there where doubts about that on jgit-dev) and wrapped the license text to a width of 80 chars. I think before we finally rewrite JGit history we should agree on that with EMO.

I am not really sure how to fully test this, so far I only did some random checks on a rewritten JGit history.