BaseFolder(): Save name and repository

As all Folders share these parameters, we can safely handle them in
BaseFolder. This makes sense, as BaseFolder has a getname() function
that returns self.name but nothing actually set self.name.

It also saves a few lines of code.

Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>

offlineimap/folder/Gmail.py

@@ -34,12 +34,12 @@ class GmailFolder(IMAPFolder):
     """
 
     def __init__(self, imapserver, name, visiblename, accountname, repository):
+        super(GmailFolder, self).__init__(imapserver, name, visiblename,
+                                          accountname, repository)
         self.realdelete = repository.getrealdelete(name)
         self.trash_folder = repository.gettrashfolder(name)
         #: Gmail will really delete messages upon EXPUNGE in these folders
         self.real_delete_folders =  [ self.trash_folder, repository.getspamfolder() ]
-        IMAPFolder.__init__(self, imapserver, name, visiblename, \
-                            accountname, repository)
 
     def deletemessages_noconvert(self, uidlist):
         uidlist = [uid for uid in uidlist if uid in self.messagelist]