Merge topic 'update-vtk-20141030' into pv-master

8751825c Merge topic 'fix-xml-crash-on-close' into master
08811c3b Merge topic 'volume-rendering-benchmark' into master
025b51be Merge topic 'opengl2-minor-fixes' into master
a18cd51c Merge topic 'fix-dataobject-information-key-dep' into master
b566db36 Trivial fixes for API change in OpenGL2 shaders
66907524 Merge topic 'render_passes' into master
598c4df6 Merge topic 'remove_old_unused_code' into master
364c8ba5 Merge topic 'update-text-baselines' into master
20d5ae1e Update baselines due to text rendering changes.
3f787161 FIX: Bypass testing if OpenGL extensions not supported
03f893bf XMLReader: Prevent streams from being closed when they don't exist.
b3abe909 FIX: Make sure context is present
ea28caf4 Merge topic 'remove-else-and-endfoo-cmake-args' into master
6b4ea15f vtkInformationDataObjectKey: move to CommonDataModel
933c76ab ENH: Volume Mapper benchmark test
058e722e zlib: remove empty if statements
...
Merge remote-tracking branch 'pvvtk/pv-master' into HEAD

* pvvtk/pv-master:

Change-Id: I321f2300366a7517129525e7de2fa19ab912fae0