Update Git Cheat Sheet to new resource
Merge pull request #389 from jordanmccullough/cheat-sheet-resource

Update Git Cheat Sheet PDF to new resource
Update Git Cheat Sheet PDF URL in Quick Reference links
Git for Windows now releases on GitHub

Change the 'download' task to look at the GitHub releases. The
URL-building is suboptimal, but the GitHub API does not provide a way to
get a link that one can pass to a browser, so we build the one from the
site by hand.
Redirect download links away from Google Code

Google Code has shut off its download service. Git release tarballs are
now only on kernel.org and Git for Windows releases are on GitHub.

This fixes #384.
Merge pull request #394 from carlosmn/msysgit-download

Git for Windows now releases on GitHub
Merge pull request #395 from carlosmn/source-downloads

Redirect download links away from Google Code
Merge pull request #391 from jordanmccullough/cheat-sheet-reference

Update Git Cheat Sheet PDF URL in Quick Reference links
Rails 3.2.17
Merge branch 'master' of github.com:git/git-scm.com
about:free-and-open-source: do not paraphrase GPL

Trying to summarize or paraphrase the GPL in laymans' terms may have
meant well, but it will invite legal issues later.  A carelessly
written paragraph that appears on the official home page of the Git
project can create a loophole to avoid license compliance, when there
is a contradiction between the loosely written version and the license
text itself, the latter of which must be the authoritative and single
source of truth.

We (the Git committee) were advised by a Software Freedom Conservancy
lawer to state the reason why the project chose to use GPL, namely, to
make sure our software will stay free, instead.

Signed-off-by: Junio C Hamano <gitster@pobox.com>