1) changed readFile() method in ChangeSet to useFile() as the file    stays open 2) added methods to ChangeSet() for retrieving change set information
1) changed readFile() method in ChangeSet to useFile() as the file
   stays open
2) added methods to ChangeSet() for retrieving change set information

sassoftware/conary,sassoftware/conary,sassoftware/conary,sassoftware/conary,sassoftware/conary