Use random number as the uid of an activity.

Stop using portal_ids in CMFActivity.

product/CMFActivity/ActiveProcess.py

@@ -35,6 +35,7 @@ from Products.ERP5Type.ConflictFree import ConflictFreeLog
 from BTrees.Length import Length
 from random import randrange
 from .ActiveResult import ActiveResult
+import uuid
 
 manage_addActiveProcessForm = DTMLFile('dtml/ActiveProcess_add', globals())
 
@@ -44,7 +45,7 @@ def addActiveProcess(self, id, title='', REQUEST=None, activate_kw=None, **kw):
   o = ActiveProcess(id)
   if activate_kw is not None:
     o.__of__(self).setDefaultActivateParameterDict(activate_kw)
-  o.uid = self.portal_catalog.newUid()
+  o.uid = uuid.uuid1().int >> 64
   self._setObject(id, o)
   o = self._getOb(id)
   if kw: