Adding CC field in Drupal_mail function doesn't support in Drupal 6.x

Hi Steve,

I am no expert on the subject - I have fiddled a little with the drupal_mail function. In the API notes there is a mention of a headers argument (type array) which can be used for adding a cc to the outgoing email.

$headers['CC'] = $email_address_list

Where you would need to create $email_address_list that contains a list of the email address for the cc.

The header array in the drupal_mail code is:
$headers = array(
'MIME-Version' => '1.0',
'Content-Type' => 'text/plain; charset=UTF-8; format=flowed; delsp=yes',
'Content-Transfer-Encoding' => '8Bit',
'X-Mailer' => 'Drupal'
);

So you are essentially adding on the CC element to $headers. I am sure there are better ways of doing this.