small changes to improve python3 compatibility

mcutils.py

@@ -1179,7 +1179,9 @@ class dropObject(object):
     return "dropObject with keys %s" % self.keys()
 
   def keys(self):
-    k = self.__dict__.keys()
+    # list is needed because in py3 keys() returs a generator (and the sorting
+    # does noe work)
+    k = list(self.__dict__.keys()); 
     k.sort()
     return k
 
@@ -1191,9 +1193,6 @@ def dict2class(d,recursive=True,cleanNames=True):
   """Return a class that has same attributes/values and 
      dictionaries key/value
   """
-  #see if it is indeed a dictionary
-  if type(d) != types.DictType:
-      return None
   
   #define a dummy class
   c = dropObject()