Add link to pthreads for CosmoTools VTKExtensions

This commit adds linking to the pthreads library when building
the CosmoTools VTKExtensions, which is needed by the GenericIO
library v1.2 and above.

Change-Id: Ib1b9eace989fc98b6fbd7eecda72f3c1627b2297
RGBZView can now write multiple image format (jpg, tiff, png)

Change-Id: I9bceac24c4d57df0dc042cafa3bbdcb459565403
Update VTK to 04/11/2014.

Bring in ghost-points fix.

Change-Id: Ibbe10661e6b40fb9684b2bde1f9630e1ef2dd96f
Fix dashboard issues from trying to tuple-slice a python list.

Change-Id: I35eccb1b8d3b4cef693a951690c7c08fff3138aa
Fix freeze when running in parallel.

vtkPConvertSelection would not execute symmetrically in parallel as it
was skipping RequestData() if the dataset was empty. That no longer can
work since ExtractSelection can result in parallel communication. This
fixes that problem by not skipping execution when data is empty on the
current rank.

Change-Id: I5acc06cd2dbe5266ebb9165bc1b8388a738c00c8
Merge topic '9808-bugfix'

cf238bb7 Fix freeze when running in parallel.
d2c29fe4 Fix dashboard issues from trying to tuple-slice a python list.
Merge topic 'catalyst-rgbz-plugin'

98c9988b RGBZView can now write multiple image format (jpg, tiff, png)
Merge topic 'link-pthreads-for-genericio'

35e8b4aa Add link to pthreads for CosmoTools VTKExtensions
Merge topic 'vtk_master_04_11_2014'

bc72f056 Update VTK to 04/11/2014.