Update to latest HEAD.
    
    - Pass requirement to compare_proviers so we can use provides version compare.
    - Show conf. file in yum-cron error message.
    - Add mark convert messages.
    - Fix logging level regression, -d9 works again.
    - Override users umask for groups files, so users can read it. BZ 982361.
    - Fix downgrade keeping .reason, note that remove+install doesn't. BZ 961938.
    - Inherit reason from install package into txmbr. BZ BZ 961938.