[ISSUE] git send-email sends wrong patches and non-provided CC (probably bug)

Hi,

Firstly sorry to gitster as he probably has received 10 redundant
emails from me of my own patch, which I sent for test purpose before
sending to the mailing list. In this process actually I found 2
issues:

1. git send-email sends CC to gitster though his email is not mentioned.
2. I wanted to send patches from a folder containing 3 patches
generated with 'git format-patch -n -o /output/dir/ -M -B origin'
command. When I use git send-email it rather sends 5 email; 3 for
PATCH 3/3 with same subject but different body. I later generated them
without -n option and sent to the mailing list and that was sent
correctly. Unfortunately gitster has 13 emails of the same content out
of 10 are outcomes of the bug. I am providing their message id so that
he can have a look at them:
Message-Id: [off-list ref]
Message-Id: [off-list ref]

If someone else wants to have a look at the problem I can also email
it to him :).

-- 
Imran M Yousuf
Entrepreneur & Software Engineer
Smart IT Engineering
Dhaka, Bangladesh
Email: imran@smartitengineering.com
Mobile: +880-1711402557