[RFC-PATCH v2 0/2] send-email: new --quote-email option

Hello,

With the current send-email command, you can send a series of patches
"in reply to" an email.

This patch adds a new option to `git send-email`,
`--quote-email=<file>` which does two things:
	- set fields appropriately (To, Cc, Subject, In-Reply-To)
	- quote the given message

In this second patch, the new option `--quote-email=<file>` needs an
email file and does not manage non ascii characters.

There is still work in progress, including:

  1. An option `--quote-email-id=<message-id>` to download the message
     from any source, e.g. http://mid.gmane.org/<message-id>/raw.
     The server's address could be set in the repo's config file.

  2. There's also a discussion about whether this option should be
     integrated in the current `--in-reply-to` option or not

     * http://news.gmane.org/find-root.php?message_id=vpqh9dmfy5k.fsf@anie.imag.fr


  3. The code to parse the email headers is currently duplicated
     several times, we are refactoring it to help maintaining the
     code.

  4. Manage non ascii characters

Documentation/git-send-email.txt |   8 +++++++
git-send-email.perl              | 160 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++---
t/t9001-send-email.sh            |  67 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 232 insertions(+), 3 deletions(-)