update NEWS, and fix conf variable name

[Jameson Graef Rollins]

On Mon, 02 Jan 2012 07:58:16 -0400, David Bremner <david at tethera.net> wrote:
>  Austin Clements:
>        emacs: Don't record undo information for search or show buffers.
>        emacs: Avoid unnecessary markers.
>  
>  Dmitry Kurochkin :
>        emacs: do not call notmuch show for non-inlinable parts
>  
>  Gregor Zattler:
>        emacs: make message indentation width customisable
>  
>  Ivy Foster:
>        emacs: Add notmuch-hello-mode-hook
>  
>  Jameson Graef Rollins (2):
>        emacs: breakout notmuch-show-advance functionality from notmuch-show-advance-and-archive
>        emacs: call notmuch-show instead of notmuch-search in buttonised id: links
>  
> 
>  Thomas Jost (4):
>        emacs: Add a face for crypto parts headers
>        emacs: add notmuch-hello-refresh-hook
>        emacs: rename notmuch-decimal-separator to notmuch-hello-thousands-separator
>        emacs: Change the default thousands separator to a space
>  
>  Thomas Schwinge (1):
>        dump: Don't sort the output by message id.

I've added NEWS items for pretty much everything here.

I'm also including a patch to fix the conf variable name for
notmuch-indent-messages-width, which really should have been
notmuch-show-indent-messages-width originally.  The NEWS entry for
this assumes the update.

jamie.