Steal Documentation/SubmittingPatches from Git

'git shortlog -- Documentation/SubmittingPatches' shows that the
following people deserve credit for it:

  A Large Angry SCM (2):
        Add footnote about Thunderbird about trimming trailing WS.
        Update Thunderbird specific hints.

  Andrew Ruder (1):
        Add policy on user-interface changes

  Bill Lear (1):
        Document --check option to git diff.

  David Symonds (1):
        Change from using email.com to example.com as example domain, as per RFC 2606.

  Jari Aalto (1):
        Clarify SubmittingPatches Checklist

  Jim Meyering (1):
        SubmittingPatches: fix a typo

  Johannes Schindelin (5):
        Begin SubmittingPatches with a check list
        SubmittingPatches: mention older C compiler compatibility
        Update to SubmittingPatches
        Rename ".dotest/" to ".git/rebase" and ".dotest-merge" to "rebase-merge"
        Rename .git/rebase to .git/rebase-apply

  Junio C Hamano (19):
        Add SubmittingPatches
        Update SubmittingPatches to add MUA specific notes.
        Update SubmittingPatches.
        Add Pine 4.63 help from Daniel.
        SubmittingPatches: note on whitespaces
        Documentation: note about contrib/.
        Documentation/SubmittingPatches: 3+1 != 6
        Documentation/SubmittingPatches: Gnus tips
        Merge branch 'maint'
        Merge branch 'maint-1.5.1' into maint
        Remove git-applypatch
        War on whitespace
        Update my contact address as the maintainer.
        Documentation/SubmittingPatches: Instruct how to use [PATCH] Subject header
        Documentation/SubmittingPatches: discuss first then submit
        Documentation/SubmittingPatches: What's Acked-by and Tested-by?
        Documentation/SubmittingPatches - a suggested patch flow
        Merge branch 'maint'
        Merge branch 'maint' to sync with GIT 1.6.0.6

  Lukas Sandström (2):
        SubmittingPatches: The download location of External Editor has moved
        Add a helper script to send patches with Mozilla Thunderbird

  Michele Ballabio (1):
        Documentation: add KMail in SubmittingPatches

  Miklos Vajna (1):
        SubmittingPatches: mention the usage of real name in Signed-off-by: lines

  Paolo Ciarrocchi (1):
        Teach SubmittingPatches about git-commit -s

  Pavel Roskin (1):
        Assorted typo fixes

  Sergei Organov (1):
        SubmittingPatches: improve the 'Patch:' section of the checklist

  Tom Preston-Werner (1):
        add instructions on how to send patches to the mailing list with Gmail

Signed-off-by: Karl Hasselström <kha@treskal.com>