Update verify functionality:
    
        - Rename OPTIONNAM and OPTIONVAL variable names to ACTIONNAM and
          ACTIONVAL respectively.
    
        - Add positional parameters interpretation using getopt(1) inside
          verify_doEnvironment.sh function.
    
        - The first item (i.e., `[0]') specification, was not specified in
          some arrays. To such arrays, the index specification was added.
          Just to clarify we are working with an array variable.