* Iterator-based access to edges
* vtkGraph subclasses from vtkDataObject instead of vtkPointSet
* vtkGraph's implementation is much more like that of the boost graph library
* Separate classes vtkDirectedGraph and vtkUndirectedGraph instead of
a Directed flag
* Mutable classes vtkMutableDirectedGraph and vtkMutableUndirectedGraph used for building graphs

* vtkSelection::Union combines selection lists only if the two selections are
  have identical "properties". Otherwise, it creates a composite selection.
  Updated test to ensure that it works.
* vtkAppendSelection no longer needs to support the "append by compositing" mode
  since vtkSelection::Union does not merge selection lists unless all properties
  are identical.
* When uses checks (unchecks) the "Use Global IDs" check box, we not convert the
  current list of indices to global ids (or vice versa).
* Added new vtkPConvertSelection filter that respects the process id.

ENH: Changing vtkSelection's underlying structure to a field data instead of a single array.  Removing auxillary arrays.
ENH: Adding a selection conversion filter and test.
ENH: Moving SortDataArray to Common.

ENH: Add point based frustum extraction. Removed ExactTest OFF option. FieldType=1, ContainingCells=1 is similar. If you need exactly that use vtkExtractGeometry with InsideOnly ON

ENH: Adding vtkAppendSeleciton and vtkSelectionLink, along with a test for vtkAppendSelection.

BUG: The dashboard machine amber5.kitware did not like the method vtkPolyData::GetPointCells(vtkIdType,short&,int*). We use instead vtkPolyData::GetPointCells(vtkIdType,vtkIdList*).

BUG: Thanks to Gilles Rougeron for reporting this bug. For some spatial arrangements points close to the boundary were not included in the triangulation. A test that reproduces such an arrangement is added. The fix in vtkDelaunay2D checks the boundary triangles and performs some edge flips to connect the boundary points.

BUG: Fixed connectivity for initial tetrahedralization of quadratic tet.
ENH: Added some coverage for vtkTessellatorFilter to TestTessellator test.
BUG: Test for cells with no parameterization earlier in loop so that
     we don't dereference a null pointer.
ENH: Added progress updates to vtkTessellatorFilter.
COMP: Eliminate MSVC6 warning.
ENH: Added default implementations of callbacks to vtkStreamingTessellator.
     Callbacks may not be set to NULL any more, so other than user error
     there shouldn't be a way to die in a callback.
ENH: Added AdaptivelySample0Facet() to be thorough (and allow points to be
     passed through tessellation).

COMP: Eliminate unused variable warnings

      unused variable warnings.

     ParaView/Servers/Filters to VTK/Graphics. These classes
     require vtkSubdivisionAlgorithm and vtkDataSetSubdivisionAlgorithm
     to be moved, but they have been renamed to avoid any
     ambiguity with vtkAlgorithm.
ENH: Renamed vtkSubdivisionAlgorithm to vtkEdgeSubdivisionCriterion
ENH: Renamed vtkDataSetSubdivisionAlgorithm to vtkDataSetEdgeSubdivisionCriterion
ENH: Added a test for vtkStreamingTessellator.
COMP: Eliminated MSVC8 warning when using std::copy()

ENH: fill in support for CONTAINING_CELLS and PASSTHROUGH in threshold extraction. Add more feature coverage to the regression test. Make frustum extraction's preserve_topology flags have same sense as the others.

BUG: Removed the wireframe shell from the test because the lines are drawn differently on seemingly every machine and the lines are not the point of the test, the cells and points are.

BUG: Cleanup selection's ability to preserve topology. Had problems in various RequestData methods and in the use of the pointlocator which only works on vtkPointSets. Update the test so to make sure it stays working.

ENH: split selection ID's into GLOBALIDS, VALUES, and OFFSETS to make it clearer what the IDS mean. ENH: Make visible cell selector count the pixels each actor covers. STYLE: remove dead class vtkPVExtractSelection.

BUG: Get rid of false positive results when extracting 2D cells by location. ENH: Put selection of points by id in. This includes using globalids attribute or a named array as the ids. STYLE: Make extract filters all take dataset on port 0 and selection on port 1. STYLE: Clean up vtkSelection::CONTENT_TYPE all id selections now simply called ID. vtkSelection::FIELD_TYPE decides POINT or CELL. Rename content type POINTS to LOCATIONS. Because of that, rename vtkExtractSelectedPoints to vtkExtractSelectedLocations.

ENH: Filling out the infrastructure for vtkSelections. A Selection holds information to recreate a subsetting operation of various types, and the vtkExtractSelectedX algorithms will perform the requested selection. Renaming vtkFrustumExtraction to vtkExtractSelectedFrustum. Renaming vtkPolyDataExtractSelection to vtkExtractSelectedPolyDataIds.

     Please note that:
     1. this is a CMake-ified version of Verdict that can still be
        compiled stand-alone, using autoconf.
     2. this version of Verdict implements some changes to the API
        designed to make it compatible with vtkMeshQuality.
ENH: Modified vtkMeshQuality in order to make it compatible with Verdict.
     Please vtkMeshQuality's documentation for more details.

ENH: Changed to composite data pipeline. A section of simple filter pipeline between a composite producer and consumer is no longer supported. This simplified the pipeline code significantly. There is no longer a COMPOSITE_DATA_SET key, composite data object are now stored in DATA_OBJECT