Remove every old-style class.

src/memory/memory.py

@@ -37,7 +37,7 @@ SAVEFILE_PARAM_XML="/param" #xml parameters template
 SAVEFILE_DATABASE="/sat.db"
 
 
-class Params():
+class Params(object):
     """This class manage parameters with xml"""
     ### TODO: add desciption in params
 
@@ -528,7 +528,7 @@ class Params():
             self.host.bridge.paramUpdate(name, value, category, profile)
             self.storage.setIndParam(category, name, value, profile)
 
-class Memory:
+class Memory(object):
     """This class manage all persistent informations"""
 
     def __init__(self, host):

src/memory/persistent.py

@@ -24,7 +24,7 @@ from logging import debug, info, warning, error
 class MemoryNotInitializedError(Exception):
     pass
 
-class PersistentDict:
+class PersistentDict(object):
     """A dictionary which save persistently each value assigned
     /!\ be careful, each assignment means a database write
     /!\ Memory must be initialised before loading/setting value with instances of this class"""

src/memory/sqlite.py

@@ -27,7 +27,7 @@ import os.path
 import time
 import cPickle as pickle
 
-class SqliteStorage():
+class SqliteStorage(object):
     """This class manage storage with Sqlite database"""