Don't declare ostream operators for 64 bit types
Use vtk scalar lookup table if available
Merge branch 'bug-18136-use-scalar-lookup-table-in-surface-mapper-2d'

* bug-18136-use-scalar-lookup-table-in-surface-mapper-2d:
  Use vtk scalar lookup table if available
Merge branch 'bug-17858-ambiguous-overloaded-operator-vtk'

* bug-17858-ambiguous-overloaded-operator-vtk:
  Don't declare ostream operators for 64 bit types

Conflicts:
	CMakeExternals/VTK.cmake