added command line options to make the bsv.filter script easier to use
added command line options to make the bsv.filter script easier to use

hanw/connectal,chenm001/connectal,hanw/connectal,8l/connectal,cambridgehackers/connectal,chenm001/connectal,cambridgehackers/connectal,8l/connectal,cambridgehackers/connectal,hanw/connectal,csail-csg/connectal,csail-csg/connectal,chenm001/connectal,chenm001/connectal,hanw/connectal,cambridgehackers/connectal,8l/connectal,csail-csg/connectal,cambridgehackers/connectal,hanw/connectal,csail-csg/connectal,8l/connectal,8l/connectal,csail-csg/connectal,chenm001/connectal