[kupfer] plugin_support: Make it clear that UserNamePassword is exported

[Ulrik Sverdrup <usverdrup src gnome org>]

commit d5c0ade001846e3e8a79bee56c6027d6dd20db80
Author: Ulrik Sverdrup <ulrik sverdrup gmail com>
Date:   Tue Mar 2 17:58:35 2010 +0100

    plugin_support: Make it clear that UserNamePassword is exported
    
    Define in __all__ a list of all public symbols in this module, to make
    it clear that UserNamePassword is intended to be used from here.

 kupfer/plugin_support.py |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/kupfer/plugin_support.py b/kupfer/plugin_support.py
index bcb4661..b8a7480 100644
--- a/kupfer/plugin_support.py
+++ b/kupfer/plugin_support.py
@@ -2,6 +2,13 @@ from kupfer import pretty
 from kupfer.core import settings
 from kupfer.core.settings import UserNamePassword
 
+__all__ = [
+	"UserNamePassword",
+	"SETTING_PREFER_CATALOG",
+	"PluginSettings",
+	"check_dbus_connection",
+]
+
 SETTING_PREFER_CATALOG = {
 	"key" : "kupfer_toplevel",
 	"label": _("Include in top level"),