visit_vtk/full/vtkRectilinearGridFacelistFilter.h
  Tried to optimize the code.
  Fixed an issue with Threading,
  there was two static variables in the ConsolidateFacesWithoutGhostZones function.
  I change them to static const members of the class.

avt/Expressions/General/avtPerMaterialValueExpression.C
  Tried to optimize the code.
  Fixed an issue with Threading,
  the function modified a class member varable. I create a local variable.
  Fixed a memory leak if an exception happened.

avt/IVP/avtPICSFilter.C
  Change the names of the parallel algorithms to match the GUI.

avt/Database/Database/avtDatabase.C
  Tried to optimize the code.
  Fixed an issue with Threading,
  the metadata and sil lists are shared by the threads and need to be protected.

common/misc/RuntimeSetting.C
  Added the threads option as a commandline variable to track.



git-svn-id: http://visit.ilight.com/svn/visit/trunk/src@23895 18c085ea-50e0-402c-830e-de6fd14e8384