When sending a nosy message to more than one recipient, with an
attachment, the second and subsquent recipients did not recieve the
main body of the message.  Instead, they got the last attachment to
the message both as the main body and as an attachment.  And, not even
property encoded, resulting in garbage messages.

That's because Roundup 1.4.8 uses the "content" variable both to hold
the body of the message and the attachment.  Once its gone through the
loop over recipients, the original body has been overridden with the
last attachment.  Doh.

The attached patch fixes the issue as it avoids the variable clash by
renaming the first 'content' to 'body'.