Prevent vtkProcessModule from calling MPI_Finalize() twice

This sets the FinalizeMPI flag in vtkProcessModule after calling
MPI_Finalize() in order to prevent the class from calling MPI_Finalize()
twice.

Change-Id: I38b46250e1df27e45d83c5ea256ecfccfe4fa731
Merge topic 'fix_warnings'

eb0b04d3 Fix warning (incorrect comparison).
Merge topic 'pyhton_highlighting_for_python_cue'

a109edec Add Python syntax coloring to PythonAnimationCue editor.
Merge topic 'qt5.3_fixes'

0623f46f Update vtkqttesting to bring in Qt 5.3 fix.
Merge topic 'reorganize-pvweb-guides'

b132097b Overhaul of the ParaViewWeb guides.
Merge topic 'vr_plugin_fix'

2c26243e Added missing return statement
Merge master into next

* commit 'aa525d5d662ea6c7036e47a07e4c8a146a773e5f':

Change-Id: I137fd725958a977fecce7ed30937d03cf0d15065
Merge topic 'fix-mpi-finalize' into next

3a80e90b Prevent vtkProcessModule from calling MPI_Finalize() twice
Move VTK forward to improve catalyst browser web widget and wamp.py

Change-Id: I9d946b87d61cda87e2c43cc23e8ecde981a2b457
Merge topic 'vtkweb-catalyst-delayed-exit-and-alternate-launch' into next

56052c08 Move VTK forward to improve catalyst browser web widget and wamp.py
Fix WebGL rendering issue

Change-Id: If9e46d85de5045044b4b8f0396adf4623bea8231
Merge topic 'pvw-fix-webgl-vgl-issues' into next

76d5c64d Fix WebGL rendering issue