Set glib program name and application name.

Better way of importing ltihooks.
Several cleanups.

sugar/activity/activity.py

@@ -39,6 +39,7 @@ from sugar.graphics.toolbutton import ToolButton
 from sugar.datastore import datastore
 from sugar import wm
 from sugar import profile
+from sugar import _sugarext
 
 class ActivityToolbar(gtk.Toolbar):
     def __init__(self, activity):
@@ -272,7 +273,7 @@ class Activity(Window, gtk.Container):
         return self._activity_id
 
     def get_service_name(self):
-        return os.environ['SUGAR_BUNDLE_SERVICE_NAME']
+        return _sugarext.get_prgname()
 
     def set_canvas(self, canvas):
         Window.set_canvas(self, canvas)
@@ -416,7 +417,7 @@ class Activity(Window, gtk.Container):
 def get_bundle_name():
     """Return the bundle name for the current process' bundle
     """
-    return os.environ['SUGAR_BUNDLE_NAME']
+    return _sugarext.get_application_name()
     
 def get_bundle_path():
     """Return the bundle path for the current process' bundle

sugar/activity/activityfactory.py

@@ -129,9 +129,8 @@ class ActivityCreationHandler(gobject.GObject):
         logging.debug("Couldn't create activity %s (%s): %s" %
             (self._activity_handle.activity_id, self._service_name, err))
         self._shell.NotifyLaunchFailure(
-                    service_name, self.get_activity_id(),
-                    reply_handler=self._no_reply_handler,
-                    error_handler=self._notify_launch_failure_error_handler)
+                self.get_activity_id(), reply_handler=self._no_reply_handler,
+                error_handler=self._notify_launch_failure_error_handler)
 
 def create(service_name, activity_handle=None):
     """Create a new activity from its name."""

sugar/activity/activityfactoryservice.py

@@ -29,6 +29,7 @@ import dbus.glib
 from sugar.activity.bundle import Bundle
 from sugar.activity import activityhandle
 from sugar import logger
+from sugar import _sugarext
 
 # Work around for dbus mutex locking issue
 gobject.threads_init()
@@ -155,8 +156,9 @@ def run(bundle_path):
     gtk.icon_theme_get_default().append_search_path(bundle.get_icons_path())
 
     os.environ['SUGAR_BUNDLE_PATH'] = bundle_path
-    os.environ['SUGAR_BUNDLE_SERVICE_NAME'] = bundle.get_service_name()
-    os.environ['SUGAR_BUNDLE_NAME'] = bundle.get_name()
+
+    _sugarext.set_prgname(bundle.get_service_name())
+    _sugarext.set_application_name(bundle.get_name())
 
     factory = ActivityFactoryService(bundle.get_service_name(),
                                      bundle.get_class())