Fix for Pine 3.91

Henrik Rindlöw <rindlow@lysator.liu.se> has produced a patch for Pine 3.91 to make it behave better:

• If the user doesn't explicitly enable QP, Pine will send the text it would have quoted using QP as 8BIT instead.
• Arbitrary characters (like åäö) are allowed in headers. They will be sent as-is, not MIME-encoded.

Look for the patch in Lysators FTP archive.