Merge branch 'dd/send-email-reedit'

"git send-email" can sometimes offer confirmation dialog "Send this
email?" with choices 'Yes', 'No', 'Quit', and 'All'.  A new action
'Edit' has been added to this dialog's choice.

* dd/send-email-reedit:
git-send-email: allow re-editing of message

diff --cc git-send-email.perl
Simple merge