Fixes parse_input_args_from_other_instance()
Fixes parse_input_args_from_other_instance()

- Regex wasn't actually safe
- Catches the SystemExit from optparse to prevent the main VisTrails
  from exiting if the client had bad command line options
- Correctly returns False if the options are invalid

celiafish/VisTrails,Nikea/VisTrails,VisTrails/VisTrails,celiafish/VisTrails,VisTrails/VisTrails,minesense/VisTrails,VisTrails/VisTrails,hjanime/VisTrails,minesense/VisTrails,minesense/VisTrails,celiafish/VisTrails,celiafish/VisTrails,VisTrails/VisTrails,hjanime/VisTrails,Nikea/VisTrails,minesense/VisTrails,hjanime/VisTrails,Nikea/VisTrails,VisTrails/VisTrails,minesense/VisTrails,hjanime/VisTrails,hjanime/VisTrails,Nikea/VisTrails