Fixed bug when trying to execute command lines where the filename had special characters on linux and mac systems, on both trunk and 1.2 branch (thanks to Juliana for spotting this bug).
Fixed bug when trying to execute command lines where the filename had special characters on linux and mac systems, on both trunk and 1.2 branch (thanks to Juliana for spotting this bug).

list2cmdline()
  making sure to escape special characters

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