FIX: intsIDList -> idList

A typo  (instIDList - > idList ) fixed:
```
2013-01-09 14:34:33 UTC DataManagement/FTSMonitorAgent EXCEPT: == EXCEPTION ==
2013-01-09 14:34:33 UTC DataManagement/FTSMonitorAgent EXCEPT: <type 'exceptions.NameError'>:global name 'instIDList' is not defined
2013-01-09 14:34:33 UTC DataManagement/FTSMonitorAgent EXCEPT:   File "/opt/dirac/pro/DIRAC/Core/Base/AgentModule.py", line 314, in am_secureCall
2013-01-09 14:34:33 UTC DataManagement/FTSMonitorAgent EXCEPT:     result = functor( *args )
2013-01-09 14:34:33 UTC DataManagement/FTSMonitorAgent EXCEPT: 
2013-01-09 14:34:33 UTC DataManagement/FTSMonitorAgent EXCEPT:   File "/opt/dirac/pro/DIRAC/DataManagementSystem/Agent/FTSMonitorAgent.py", line 65, in execute
2013-01-09 14:34:33 UTC DataManagement/FTSMonitorAgent EXCEPT:     res = self.monitorTransfer( ftsReqDict )
2013-01-09 14:34:33 UTC DataManagement/FTSMonitorAgent EXCEPT: 
2013-01-09 14:34:33 UTC DataManagement/FTSMonitorAgent EXCEPT:   File "/opt/dirac/pro/DIRAC/DataManagementSystem/Agent/FTSMonitorAgent.py", line 198, in monitorTransfer
2013-01-09 14:34:33 UTC DataManagement/FTSMonitorAgent EXCEPT:     res = self.transferDB.getAttributesForFilesList( fileIDs, ['LFN'] )
2013-01-09 14:34:33 UTC DataManagement/FTSMonitorAgent EXCEPT: 
2013-01-09 14:34:33 UTC DataManagement/FTSMonitorAgent EXCEPT:   File "/opt/dirac/pro/DIRAC/DataManagementSystem/DB/TransferDB.py", line 1520, in getAttributesForFilesList
2013-01-09 14:34:33 UTC DataManagement/FTSMonitorAgent EXCEPT:     return self.__getAttributesForList( 'Files', 'FileID', fileIDList, attrList )
2013-01-09 14:34:33 UTC DataManagement/FTSMonitorAgent EXCEPT: 
2013-01-09 14:34:33 UTC DataManagement/FTSMonitorAgent EXCEPT:   File "/opt/dirac/pro/DIRAC/DataManagementSystem/DB/TransferDB.py", line 1539, in __getAttributesForList
2013-01-09 14:34:33 UTC DataManagement/FTSMonitorAgent EXCEPT:     res = self.getFields( table, outFields = [tableID] + attrList, condDict = {tableID:instIDList} )
```
 
This should go to the upstream branch as well.