Update help_updateOutputFiles.sh:
    
        - Correct the invocation of -I option.
    
        - Add -I option to info, and plaintext makeinfo outputs too in
          order for makeinfo to choose the correct image format based on
          output.
    
          Format selection seems to work ok for html and plaintext
          outputs, but not for info output. Anyway maintaining .txt image
          version consumes times, since I can't see a way (at this moment)
          to generate them from one source, just as we did with pdf, and
          jpg output formats. 
          
          To produce pdf, and jpg images we design and export one png
          image from svg design and centos-art.sh script automatically
          coverts that png image to pdf and jpg formats using the
          ImageMagick convert tool.
    
        - Start using one action message for each output action.