[libvirt] [PATCH] Add docs about new mailing list

[Jim Meyering]

Daniel P. Berrange wrote:
> * docs/contact.html.in: Document new users mailing list
...
Sounds good.

> +    <p>
> +      Both mailing lists require that you <strong>subscribe before posting to the list</strong>,

Since both lists are using listhelper,

  http://savannah.gnu.org/maintenance/ListHelperAntiSpam

it is now possible to remove the subscribe-before-posting requirement.
If we remove it, that makes it easier for people to send their
first post.  Now, that may not always be such a good thing ;-)
but at least it won't result in spam.

> +      otherwise your posting will be blocked by mailman. You can subscribe at the linked webpages
> +      above.

Perhaps say "delayed for manual approval" rather than blocked?

> +    </p>
> +    <p>
> +      Patches with explanations and provided as attachments are really appreciated and should
> +      be directed to the development mailing list will be discussed on the mailing list.
>        If possible generate the patches by using <code>git diff</code> in a GIT
>        clone.
>      </p>

Minor wording fix, and say we prefer "git format-patch", rather
than "git diff" output, since the former can provide (we hope)
a commit log and useful attribution, if/when we apply the patch,
while "git diff" does not.

    Patches with explanations and provided as attachments are really appreciated.
    They should be sent to the development mailing list, and will be
    discussed there.
    If possible, generate the patches by using <code>git format-patch</code>
    in a GIT clone.