Change the signatures of ietf.utils.mail functions using toUser to reflect that it's used as a boolean, not something else.

 - Legacy-Id: 3522

Author: levkowetz

ietf/utils/mail.py

@@ -144,15 +144,15 @@ def send_mail(request, to, frm, subject, template, context, *args, **kwargs):
     return send_mail_text(request, to, frm, subject, txt, *args, **kwargs)
 
 
-def send_mail_text(request, to, frm, subject, txt, cc=None, extra=None, toUser=None, bcc=None):
+def send_mail_text(request, to, frm, subject, txt, cc=None, extra=None, toUser=False, bcc=None):
     """Send plain text message."""
     if isinstance(txt, unicode):
         msg = MIMEText(txt.encode('utf-8'), 'plain', 'UTF-8')
     else:
         msg = MIMEText(txt)
     send_mail_mime(request, to, frm, subject, msg, cc, extra, toUser, bcc)
 
-def send_mail_mime(request, to, frm, subject, msg, cc=None, extra=None, toUser=None, bcc=None):
+def send_mail_mime(request, to, frm, subject, msg, cc=None, extra=None, toUser=False, bcc=None):
     """Send MIME message with content already filled in."""
     if isinstance(frm, tuple):
 	frm = formataddr(frm)