- replace call to perl with native python edit function
    - change permissions of selinux plugin 'filesystems' file
    - from Ville Skyttä <ville.skytta@iki.fi>:
      - Find out completions for --*-plugin dynamically
      - Keep $COLUMNS in consolehelper environment for --help formatting
      - Document --scrub, --enable-plugin, and --disable-plugin
      - Fix option name in --enable-plugin/--disable-plugin error string
      - Add --scrub completion
      - Complete on *.spm (*.src.rpm are sometimes named like that e.g. in SUSE)
      - Fix buildsrpm() docstring
      - Error message improvements