Allow to pass 'force' arg to selectro() to enforce a new select

Pass through the 'force' argument from selectro() to select() so that it
can also enforce a new SELECT even if we already are on that folder.

Also change the default parameter from '0' to 'False' to make clear that
this is a Bool.

Signed-off-by: Sebastian Spaeth <Sebastian@SSpaeth.de>

offlineimap/folder/IMAP.py

@@ -42,19 +42,19 @@ class IMAPFolder(BaseFolder):
         self.randomgenerator = random.Random()
         #self.ui is set in BaseFolder
 
-    def selectro(self, imapobj):
+    def selectro(self, imapobj, force = False):
         """Select this folder when we do not need write access.
 
         Prefer SELECT to EXAMINE if we can, since some servers
         (Courier) do not stabilize UID validity until the folder is
         selected. 
         .. todo: Still valid? Needs verification
-
+        :param: Enforce new SELECT even if we are on that folder already.
         :returns: raises :exc:`OfflineImapError` severity FOLDER on error"""
         try:
-            imapobj.select(self.getfullname())
+            imapobj.select(self.getfullname(), force = force)
         except imapobj.readonly:
-            imapobj.select(self.getfullname(), readonly = True)
+            imapobj.select(self.getfullname(), readonly = True, force = force)
 
     def suggeststhreads(self):
         return 1

offlineimap/imaplibutil.py

@@ -40,7 +40,7 @@ class UsefulIMAPMixIn(object):
             return self.mailbox
         return None
 
-    def select(self, mailbox='INBOX', readonly=False, force = 0):
+    def select(self, mailbox='INBOX', readonly=False, force = False):
         """Selects a mailbox on the IMAP server
 
         :returns: 'OK' on success, nothing if the folder was already