Merge branch 'cb/send-email-sanitize-trailer-addresses'

Address-looking strings found on the trailer are now placed on the
Cc: list after running through sanitize_address by "git send-email".
* cb/send-email-sanitize-trailer-addresses:
  git-send-email: use sanitized address when reading mbox body

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

diff --cc t/t9001-send-email.sh
Simple merge