Add workplace verification before locale content.
    
    - Previously, locale module didn't verify whether the working
      directory was a supported working directory or not. As consequence,
      variable expansion inside configuration files at locale time might
      be expanded to a value different from that expected. This update
      changes the locale module to verify the workplace before localize
      any content.
    
      The main problem to solve here is the expansion of TCAR_WORKDIR
      variable. If the working directory isn't verified, and this value
      isn't retrieved from the configuration file inside it, TCAR_WORKDIR
      is expanded to its default value which might be not the place where
      your working directory is really stored in. As consequence,
      automation script will try to take content from a place that might
      not exist, making the automation scripts to fail at some point.