Remove get_stream methods from folder and mailbox.

* doc/texinfo/folder.texi: Update
* include/mailutils/cpp/folder.h (Folder) <set_stream>
<get_stream>: Remove.
* include/mailutils/folder.h (mu_folder_get_stream)
(mu_folder_get_streamref)
(mu_folder_set_stream): Remove.
* include/mailutils/mailbox.h (mu_folder_get_stream)
(mu_folder_get_streamref)
(mu_folder_set_stream): Remove protos.
* include/mailutils/sys/folder.h (_mu_folder)<stream>: Remove.
All uses updated.
* libmailutils/mailbox/folder.c (mu_folder_set_stream)
(mu_folder_get_stream,mu_folder_get_streamref): Remove.
* libmailutils/mailbox/mailbox.c (mu_mailbox_get_stream)
(mu_mailbox_get_streamref): Remove.
* libmu_cpp/folder.cc (get_stream, set_stream): Remove.
* libmu_scm/mu_mailbox.c (mu-mailbox-get-port): Remove.
* python/libmu_py/folder.c (get_stream): Remove.

@@ -83,12 +83,6 @@ struct mu_list_response
 @c Stream Settings.
 @c
 
-@deftypefun  int mu_folder_get_stream (mu_folder_t, mu_stream_t *)
-@end deftypefun
-
-@deftypefun  int mu_folder_set_stream (mu_folder_t, mu_stream_t)
-@end deftypefun
-
 @c
 @c Notifications.
 @c

@@ -48,9 +48,6 @@ class Folder
 		   int flags, size_t max_level,
 		   mu_folder_enumerate_fp enumfun, void* enumdata);
 
-  Stream& get_stream ();
-  void set_stream (const Stream& stream);
-
   Url& get_url ();
 };
 

@@ -61,14 +61,6 @@ extern int  mu_folder_enumerate      (mu_folder_t, const char *,
 extern int  mu_folder_lsub           (mu_folder_t, const char *, const char *,
 				      mu_list_t *);
 
-/* Stream settings. Don't use these functions.
-   FIXME: To be removed. */
-extern int  mu_folder_get_stream     (mu_folder_t, mu_stream_t *)
-                                       __attribute__ ((deprecated));
-extern int  mu_folder_get_streamref  (mu_folder_t, mu_stream_t *);
-  
-extern int  mu_folder_set_stream     (mu_folder_t, mu_stream_t);
-
   /* Match function */
 extern int mu_folder_set_match (mu_folder_t folder, mu_folder_match_fp pmatch);
 extern int mu_folder_get_match (mu_folder_t folder,

@@ -86,12 +86,6 @@ extern int  mu_mailbox_get_size        (mu_mailbox_t, mu_off_t *size);
 extern int  mu_mailbox_is_updated      (mu_mailbox_t);
 extern int  mu_mailbox_scan            (mu_mailbox_t, size_t no, size_t *count);
 
-/* Mailbox Stream.  */
-extern int  mu_mailbox_set_stream      (mu_mailbox_t, mu_stream_t);
-extern int  mu_mailbox_get_stream      (mu_mailbox_t, mu_stream_t *)
-                                         __attribute__ ((deprecated));
-extern int  mu_mailbox_get_streamref   (mu_mailbox_t, mu_stream_t *);
-
 /* Lock settings.  */
 extern int  mu_mailbox_get_locker      (mu_mailbox_t, mu_locker_t *);
 extern int  mu_mailbox_set_locker      (mu_mailbox_t, mu_locker_t);

@@ -38,7 +38,6 @@ struct _mu_folder
   mu_authority_t authority;
   mu_observable_t observable;
   mu_property_t property;
-  mu_stream_t stream;
   mu_monitor_t monitor;
   mu_url_t url;
   int flags;

@@ -31,7 +31,6 @@
 #include <mailutils/monitor.h>
 #include <mailutils/observer.h>
 #include <mailutils/registrar.h>
-#include <mailutils/stream.h>
 #include <mailutils/url.h>
 #include <mailutils/errno.h>
 #include <mailutils/property.h>
@@ -212,8 +211,6 @@ mu_folder_destroy (mu_folder_t *pfolder)
 	  mu_monitor_wrlock (monitor);
 	  if (folder->authority)
 	    mu_authority_destroy (&folder->authority, folder);
-	  if (folder->stream)
-	    mu_stream_destroy (&folder->stream);
 	  if (folder->url)
 	    mu_url_destroy (&folder->url);
 	  if (folder->property)
@@ -274,39 +271,6 @@ mu_folder_close (mu_folder_t folder)
 }
 
 int
-mu_folder_set_stream (mu_folder_t folder, mu_stream_t stream)
-{
-  if (folder == NULL)
-    return EINVAL;
-  if (folder->stream)
-    mu_stream_destroy (&folder->stream);
-  folder->stream = stream;
-  return 0;
-}
-
-int
-mu_folder_get_stream (mu_folder_t folder, mu_stream_t *pstream)
-{
-  /* FIXME: Deprecation warning */
-  if (folder == NULL)
-    return EINVAL;
-  if (pstream == NULL)
-    return MU_ERR_OUT_PTR_NULL;
-  *pstream = folder->stream;
-  return 0;
-}
-
-int
-mu_folder_get_streamref (mu_folder_t folder, mu_stream_t *pstream)
-{
-  if (folder == NULL)
-    return EINVAL;
-  if (pstream == NULL)
-    return MU_ERR_OUT_PTR_NULL;
-  return mu_streamref_create (pstream, folder->stream);
-}
-
-int
 mu_folder_set_authority (mu_folder_t folder, mu_authority_t authority)
 {
   if (folder == NULL)

@@ -648,55 +648,6 @@ mu_mailbox_set_stream (mu_mailbox_t mbox, mu_stream_t stream)
   return 0;
 }
 
-/* FIXME: This is a problem.  We provide a mu_mailbox_get_stream ()
-   and this stream is special: it should, in theory, represent
-   a "view" of a flow of messages.  However, providing this perspective
-   may make sense for local mailboxes, but downright impossible
-   for remote mailboxes, short on downloading entire mailbox
-   locally.
-
-   This function will be removed in the short run.  It is no longer
-   used by MU.  */
-int
-mu_mailbox_get_stream (mu_mailbox_t mbox, mu_stream_t *pstream)
-{
-  /* FIXME: Deprecation warning */
-  if (mbox == NULL)
-    return EINVAL;
-  if (pstream == NULL)
-    return MU_ERR_OUT_PTR_NULL;
-
-  /* If null two cases:
-     - it is no open yet.
-     - it a remote stream and the socket stream is on the folder.  */
-  if (mbox->stream == NULL)
-    {
-      if (mbox->folder)
-	return mu_folder_get_stream (mbox->folder, pstream);
-    }
-  *pstream = mbox->stream;
-  return 0;
-}
-
-int
-mu_mailbox_get_streamref (mu_mailbox_t mbox, mu_stream_t *pstream)
-{
-  if (mbox == NULL)
-    return EINVAL;
-  if (pstream == NULL)
-    return MU_ERR_OUT_PTR_NULL;
-
-  /* If null two cases:
-     - it is no open yet.
-     - it a remote stream and the socket stream is on the folder.  */
-  if (mbox->stream == NULL)
-    {
-      if (mbox->folder)
-	return mu_folder_get_streamref (mbox->folder, pstream);
-    }
-  return mu_streamref_create (pstream, mbox->stream);
-}
-
 int
 mu_mailbox_get_observable (mu_mailbox_t mbox, mu_observable_t *pobservable)
 {

@@ -110,26 +110,6 @@ Folder :: enumerate (const std::string& name, void* pattern,
   return *new List (c_list);
 }
 
-Stream&
-Folder :: get_stream ()
-{
-  mu_stream_t c_stream;
-
-  int status = mu_folder_get_stream (folder, &c_stream);
-  if (status)
-    throw Exception ("Folder::get_stream", status);
-
-  return *new Stream (c_stream);
-}
-
-void
-Folder :: set_stream (const Stream& stream)
-{
-  int status = mu_folder_set_stream (folder, stream.stm);
-  if (status)
-    throw Exception ("Folder::set_stream", status);
-}
-
 Url&
 Folder :: get_url ()
 {

@@ -307,35 +307,6 @@ SCM_DEFINE_PUBLIC (scm_mu_mailbox_get_url, "mu-mailbox-get-url", 1, 0, 0,
 }
 #undef FUNC_NAME
 
-SCM_DEFINE_PUBLIC (scm_mu_mailbox_get_port, "mu-mailbox-get-port", 2, 0, 0,
-		   (SCM mbox, SCM mode),
-"Returns a port associated with the contents of the @var{mbox},\n"
-"which is a string defining operation mode of the stream. It may\n"
-"contain any of the two characters: @samp{r} for reading, @samp{w} for\n"
-"writing.\n")
-#define FUNC_NAME s_scm_mu_mailbox_get_port
-{
-  struct mu_mailbox *mum;
-  mu_stream_t stream;
-  int status;
-  char *s;
-  SCM ret;
-  
-  SCM_ASSERT (mu_scm_is_mailbox (mbox), mbox, SCM_ARG1, FUNC_NAME);
-  SCM_ASSERT (scm_is_string (mode), mode, SCM_ARG2, FUNC_NAME);
-  mum = (struct mu_mailbox *) SCM_CDR (mbox);
-  status = mu_mailbox_get_streamref (mum->mbox, &stream);
-  if (status)
-    mu_scm_error (FUNC_NAME, status,
-		  "Cannot get mailbox stream",
-		  scm_list_1 (mbox));
-  s = scm_to_locale_string (mode);
-  ret = mu_port_make_from_stream (mbox, stream, scm_mode_bits (s));
-  free (s);
-  return ret;
-}
-#undef FUNC_NAME
-
 SCM_DEFINE_PUBLIC (scm_mu_mailbox_get_message, "mu-mailbox-get-message", 2, 0, 0,
 		   (SCM mbox, SCM msgno), 
 "Retrieve from message #@var{msgno} from the mailbox @var{mbox}.")

@@ -129,22 +129,6 @@ api_folder_close (PyObject *self, PyObject *args)
 }
 
 static PyObject *
-api_folder_get_stream (PyObject *self, PyObject *args)
-{
-  int status;
-  PyFolder *py_folder;
-  PyStream *py_stm = PyStream_NEW ();
-
-  if (!PyArg_ParseTuple (args, "O!", &PyFolderType, &py_folder))
-    return NULL;
-
-  Py_INCREF (py_stm);
-
-  status = mu_folder_get_streamref (py_folder->folder, &py_stm->stm);
-  return status_object (status, (PyObject *)py_stm);
-}
-
-static PyObject *
 api_folder_get_authority (PyObject *self, PyObject *args)
 {
   int status;
@@ -253,9 +237,6 @@ static PyMethodDef methods[] = {
   { "close", (PyCFunction) api_folder_close, METH_VARARGS,
     "" },
 
-  { "get_stream", (PyCFunction) api_folder_get_stream, METH_VARARGS,
-    "" },
-
   { "get_authority", (PyCFunction) api_folder_get_authority, METH_VARARGS,
     "" },