Update tcar_printMessage function.
    
    - Previously, when error messages are printed, tcar_printMessage
      printed the path string of tcar.sh script inside the repository not
      the path string of the file executed. This update changes the
      tcar_printMessage function to use the path string related to file
      being executed (e.g., ${0}) instead of the path related to tcar.sh
      script inside the repository.
    
      There might be situations in which both the path of the file being
      executed and the path related to tcar.sh script inside the
      repository do print the same path information (e.g., you are
      executing the tcar.sh script using no command but its absolute
      path).