de4bed7 Ticket #47330 - changelog db extension / upgrade is obsolete

Authored and Committed by nhosoi 10 years ago
    Ticket #47330 - changelog db extension / upgrade is obsolete
    
    Bug Description: Upgrading from db4 to db5 was not implemented
    in changelog db code.
    
    Fix Description: Implemented upgrading changelog db from db4
    to db5.  The db extension for db4 is ".db4"; for the newer
    BDB version, it is ".db" without the major version number.
    This is the same format as the main db.
    
    Reviewed by Rich (Thank you!!)
    
    https://fedorahosted.org/389/ticket/47330
    (cherry picked from commit 845a221350bc58166773f50526adfd186bdc86e6)