Merge topic 'miscellaneous_volume_rendering_fixes'

dc12e900 Fix static analysis issue with use of iter after erase.
8da3053d BUG #13749: Auto-detect remote-rendering requirements.
637e1399 Fix lost string termination character.
28ce06c0 Fix detection of X.
Merge topic 'vtkPolyData_removecells'

ad33f754 Updating VTK to pull in a fix to polydata.
Merge master into next

* commit 'aa525d5d662ea6c7036e47a07e4c8a146a773e5f':

Change-Id: I9d2db65531eb21d0cf9cb7c8bc188213e9773cc2