Specifying if MPI was initialized on the server.

This changes lets the client know if the server was initialized
with MPI. It also enables allowing the XML proxy definition to
specify whether it relies on MPI in order to be instantiated.

Change-Id: I335ed3dc3dbaa40acdb1c7fd758ebc6a404e80c2
Update to VTK master.

Also fixed VisItBridge following the update.

Change-Id: Ib2537ceb7323172644ad305451a95e34f02df26c
Taking out debug print statement.

Change-Id: I07d0673890dbd76d2eea185b773d90d573bd266e
Fix GenericIO reader issue with multiple timesteps

The GenericIO reader was resetting the DataArraySelection
object when the filename was changed. Consequently, all arrays
were disabled and if the user has loaded arrays in the previous
time-step, they would not be loaded in later time-steps. Fixed that.

Change-Id: I67fffdb69a21c1f8c7e7b701ade0423fbbc2f5b1
Merge topic '14314_servermanager_mpi_initialized'

767f8f9 Taking out debug print statement.
87ce780 Specifying if MPI was initialized on the server.
Merge topic 'fix-genericio-fileseries-reader'

9d540ab Fix GenericIO reader issue with multiple timesteps
Merge topic 'update_vtk_master'

fdcbc28 Update to VTK master.