yum-cron: EmailEmitter failure should not be fatal. BZ 1055042
    
    - yum-cron: Add a retry loop around doLock().
    - _set_repos_cache_req(): Handle missing cachedir. BZ 1044080
    - repo-pkgs: Fix repoid parsing. BZ 1055132.
    - Fix bash completion for 'autoremove'
    - downloadonly: unlink .tmp files on ctrl-c. BZ 1045806
    - repo-pkgs <repoid> info|list shouldn't require root UID.
    - doPackageLists(repoid=<repoid>): filter 2nd ipkg lookup. BZ 1056489