Commit messages lines are sometimes overly long.

Suggest line wrapping at 75 columns so the default git commit log
indentation of 4 plus the commit message text still fits on an 80 column
screen.

Add a checkpatch test for long commit messages lines too.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: David Miller <davem@davemloft.net>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ian Morris <ipm@chirality.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Bring in the big SubmittingPatches thrashup.

Conflicts:
	Documentation/SubmittingPatches

The Developers Certificate of Origin has a mixture of tabs and white
spaces which is annoying to view if your editor explicitly views white
space characters.

Also remove any trailing white spaces found in the file.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Suggested-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Suggested-by: Frank Rowand <frowand.list@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Changes to make the formatting a bit more consistent and fix up wording in
various places.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>

SubmittingPatches was written in the "keep sending to Linus until something
shows up in a release" era.  Given that we don't do things that way anymore
and the system is far less lossy, update this information and add some
hints on responding to reviewer comments.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>

SubmittingPatches had two sections on selecting recipients; both were
showing their age.  Unify them into a single section that more closely
reflects how we do things now.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Much of the information in SubmittingPatches shows its pre-git history.
Clean that up a bit and rephrase things with the assumption that developers
will be using git.  Also rewrite the "pull requests" section and include
information on using signed tags.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>

This section was just a weird collection of stuff that is better found
elsewhere.  The "coding style" section somewhat duplicated the previous
coding style section; the useful information there has been collected into
a single place.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>