git-send-email: allow edit invalid email address
git-send-email: allow edit invalid email address

In some cases the user may want to send email with "Cc:" line with
email address we cannot extract. Now we allow user to extract
such email address for us.

Signed-off-by: Krzysztof Mazur <ac4f352566d26649578fb9202213e9e6cf800c73@podlesie.net>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git