Emacs interface no longer displays backend output as it comes in

The emacs interface creates and populates a *commit-patch* buffer. This is meant
to stay in the background unless something goes wrong. Due to a bug in Emacs
(http://debbugs.gnu.org/cgi/bugreport.cgi?bug=17815) this buffer was getting
displayed if using commit-patch with TRAMP, even when no error has occured.

This patch asks emacs to not update this buffer with the data as it comes in.
This is fine here, and fixes the issue.

commit-patch-buffer-in-directory: Use commit-patch script from the same directory

The missing link for distributing the package via ELPA

Still lots of noise from VCSes.

IE. Section D.8 of the elisp manual.

Thanks to Jonas Bernoulli <jonas@bernoul.li> for the push.

[commit-patch] Use --force when patching back to the clean version so if something goes wrong it doesn't ask interactive questions.

[commit-patch] Use --relative with "git diff" so that commit-partial doesn't silently fail when you in a subdirectory.

"git apply" seems to filter the diff so that only files within the current
directory (and its descendants) get applied. It (crazily) does this silently
and there doesn't seem to be an option to override this.

The other option would be to cd to the project root just before calling "git
apply" but I think it's more intuitive to diff from your current
directory--just cd to the root yourself if you want to see the whole
project's changes.