Log Message:
Update p5-MailTools to 1.49

- Mail::Mailer::_clean_up left an extra space behind each header line.
- Mail::Mailer::_clean_up trims folded headerlines on more than two lines.
- The fix for nested comments in Mail::Address's
  "Mark Overmeer <mailtools@overmeer.net> (mailtools maintainer)"
   was parsed into two separate objects
- Mail::Mailer::_cleanup_headers unfolds the header lines, but
  forgot to remove the indentation blanks
- Mail::Cap::new has two new options
- typo in Mail/Mailer/rfc822.pm
- Add Content-Disposition to the list of structured header fields
- Mail/Mailer/smtp.pm which enables the passing-on of args to Net::SMTP