Modified sette scripts to use the branch name as the default sub-directory for...

Modified sette scripts to use the branch name as the default sub-directory for SETTE records (instead of MAIN). Also corrected a few minor issues and added a -u option to sette.sh, sette_rpt.sh and sette_eval.sh which will avoid asking for user input (at least the looped input that is problematic in CI applications)