Fixes for identifying input and output files in parse_commands.py

                    arg = re.sub('scripts', TESTV_PATH, arg)

                    # Identify input files

                    if '.txt' in arg:

                        arg = re.sub('tests', REF_PATH, arg) # Decoder configuration file -- input file

                    if 'dectrace' in arg:

                        arg = re.sub('tests', CUT_PATH, arg) # dectrace output files occur before the input file

                        arg = re.sub('tests', REF_PATH, arg) 

                    # Identify special cases of output files: dectrace, spltmd.bit

                    if 'spltmd.bit' in arg or 'dectrace' in arg:

                        arg = re.sub('tests', CUT_PATH, arg) 

                    if 'tests' in arg:

                        if not input_set:

                            arg = re.sub('tests', REF_PATH, arg) # First occurence of tests/* is the input file

                            input_set = True

                        else:

                            arg = re.sub('tests', CUT_PATH, arg) # Remaining occurences of tests/* are output files

                    #arg = re.sub('tests/ref', REF_PATH + r'/ref', arg) # For .fer cases the bitstream is in ref

                    # arg = re.sub('tests/split_rendering/renderer_configs', REF_PATH + r'/split_rendering/renderer_configs', arg)

                    # if re.search("^tests.*192$",arg):

                    #     arg = re.sub('tests/split_rendering/ref', REF_PATH + r'/split_rendering/ref', arg)                    

                    # if re.search("\.wav$",arg):

                    #     arg = re.sub('tests', CUT_PATH, arg) # Output argument for decoder ends with .wav

                    # else:

                    #     arg = re.sub('tests/ref', REF_PATH + r'/ref', arg) # Input argument

                    # if re.search("^tests.*bit$",arg):

                    #     arg = re.sub('tests', CUT_PATH, arg) # Output argument for decoder ends with .wav    

                args.append(arg)

            cmd = ' '.join(args)