Bugfix.

* examples/http.c (main): Fix open/wait loop.
* libmailutils/stream.c (mu_stream_wait): May be used
on not-open streams.
* examples/.gitignore: Add more files.

@@ -15,8 +15,10 @@ mimetest
 msg-send
 mta
 muauth
+mucat
 muemail
 murun
+musocio
 nntpclient
 pop3client
 sfrom

@@ -99,13 +99,15 @@ main (int argc, char **argv)
 
   for (attempt = 0; ret; )
     {
-      ret = mu_stream_open (stream);
       if ((ret == EAGAIN || ret == EINPROGRESS) && attempt < io_attempts)
 	{
 	  ret = http_stream_wait(stream, MU_STREAM_READY_WR, &attempt);
 	  if (ret == 0)
+	    {
+	      ret = mu_stream_open (stream);
 	      continue;
 	    }
+	}
       mu_error ("mu_stream_open: %s", mu_strerror (ret));
       exit (EXIT_FAILURE);
     }

@@ -1071,14 +1071,18 @@ mu_stream_wait (mu_stream_t stream, int *pflags, struct timeval *tvp)
 
   if (stream == NULL)
     return EINVAL;
-  
+#if 0
+  /* NOTE: Sometimes mu_stream_wait is called after a failed mu_stream_open.
+     In particular, this is needed for a TCP stream opened with a
+     MU_STREAM_NONBLOCK flag (see examples/http.c).  Until a better
+     solution is found, this check is commented out. */
   if (!(stream->flags & _MU_STR_OPEN))
     {
       if (stream->open)
 	return MU_ERR_NOT_OPEN;
       _stream_init (stream);
     }
-  
+#endif
   /* Take to acount if we have any buffering.  */
   /* FIXME: How about MU_STREAM_READY_WR? */
   if ((*pflags) & MU_STREAM_READY_RD