restore compatibilty with python 2.5 for ui TTY

threading.currentThread() used an accessor to get its name.

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

Changelog.draft.rst

@@ -19,6 +19,8 @@ Changes
 Bug Fixes
 ---------
 
+* Restore compatibiliy with python 2.5.
+
 
 Pending for the next major release
 ==================================

offlineimap/ui/TTY.py

@@ -37,7 +37,10 @@ class TTYUI(UIBase):
             #if the next output comes from a different thread than our last one
             #add the info.
             #Most look like 'account sync foo' or 'Folder sync foo'.
-            threadname = currentThread().name
+            try:
+                threadname = currentThread().name
+            except AttributeError:
+                threadname = currentThread().getName()
             if (threadname == s._lastThreaddisplay):
                 print " %s" % msg
             else: