Changes to VTK package: Added support to send Camera when updating the VTKCell. This is for keeping the same camera position when re-executing the pipeline in mashup.
Changes to VTK package: Added support to send Camera when updating the VTKCell.
This is for keeping the same camera position when re-executing the pipeline in
mashup.

packages/vtk/vtkcell.py
QVTKWidget.updateContents()
  New parameter cameralist
  If a list of cameras is passed and their number is the same as the number
  of renderers, we will set the active cameras using the passed list.

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