Issue #4239: adjust email examples not to use connect() and terminate with

quit() and not close().

Doc/includes/email-alternative.py

@@ -45,4 +45,4 @@ s = smtplib.SMTP('localhost')
 # sendmail function takes 3 arguments: sender's address, recipient's address
 # and message to send - here it is sent as one string.
 s.sendmail(me, you, msg.as_string())
-s.close()
+s.quit()

Doc/includes/email-dir.py

@@ -106,9 +106,8 @@ must be running an SMTP server.
         fp.close()
     else:
         s = smtplib.SMTP()
-        s.connect()
         s.sendmail(opts.sender, opts.recipients, composed)
-        s.close()
+        s.quit()
 
 
 if __name__ == '__main__':

Doc/includes/email-mime.py

@@ -27,6 +27,5 @@ for file in pngfiles:
 
 # Send the email via our own SMTP server.
 s = smtplib.SMTP()
-s.connect()
 s.sendmail(me, family, msg.as_string())
-s.close()
+s.quit()

Doc/includes/email-simple.py

@@ -20,6 +20,5 @@ msg['To'] = you
 # Send the message via our own SMTP server, but don't include the
 # envelope header.
 s = smtplib.SMTP()
-s.connect()
 s.sendmail(me, [you], msg.as_string())
-s.close()
+s.quit()