Update design modules of kspalsh for centos-5 distribution.
    
    - Previously, ksplash design models were using separate configuration
      files for describing image production and image branding. This
      update changes the render.conf.tpl file to integrate both image
      production and image branding in just one file.
    
    - Previously, render.conf.tpl file was using "direct" rendition type.
      This type of rendition was renamed to "images" making any direct
      rendition to be unrecognized. This update changes render.conf.tpl to
      use "images" rendition type instead of "direct" rendition type.