This patch includes the following changes:

+ Eliminate a shiboken warning (do not wrap cJSON methods).
+ Fix a stupid mistake causing a warning in ExportJSON.
+ A scripted rename. Ran this command:

      find smtk/bridge -type f -exec vim -S /path/to/vscr {} \;

  where `vscr` contained

      %s/SMTKSessionExodusExports/Exports/g
      %s/SMTKSessionExodus/smtkExodusSession/g
      %s/SMTKSESSIONEXODUS_EXPORT/SMTKEXODUSSESSION_EXPORT/g
      %s/discreteSessionExports/Exports/g
      %s/SMTKRemoteExports/Exports/g
      %s/SMTKRemote/smtkRemoteSession/g
      %s/SMTKREMOTE_EXPORT/SMTKREMOTESESSION_EXPORT/g
      wq
+ Another scripted rename:

      find smtk/extension -type f -exec vim -S /path/to/vscr {} \;

  where `vscr` is a vim script containing:

      %s/QtSMTKExports.h/Exports.h/g
      %s/QTSMTK_EXPORT/SMTKQTEXT_EXPORT/g
      %s/vtkSMTKModule/smtkVTKExtModule/g
      %s/vtkSMTKExports/smtkVTKExtExports/g
      %s/VTKSMTK_EXPORT/SMTKVTKEXT_EXPORT/g
      %s/vtkSMTK/smtkVTKExt/g
      wq

+ Add VTK-style Python wrapping to the classes in vtkSMTKExt
  (which cannot be named smtkVTKExt because of VTK's build system).
  This should close #97.
+ Fixes to get things building again.