ENH: Add CVD and CVF types to VectorIndexSelectionCastImageFilter wrappings

and cleanup the .wrap file.

Change-Id: I290dd33bc87d1fa595642f526adb6f98e7e14ff8
BUG: Fix segfault when setting displacement field as null

This patch addresses a segmentation fault we setting the displacement
field image to a null pointer. The initial state of the displacement
fields is with a null displacement field image. This patch explicitly
sets the fixed parameters to 0.0 when the field is a null
ptr. Additional checks are added to only set the interpolator's image
when both the interpolator and the displacement field is set

Change-Id: I35202a0049f5ce0921690fca94901f48b639785c
DOC: Text and picture problems, book2

Change-Id: I1d14941a08daae127684a28bbd66608f4c667cf9
Merge topic 'FixDisplaceFieldNullSet'

ce0a68e1 BUG: Fix segfault when setting displacement field as null
Merge topic 'WrapVectorIndexSelectionCastImageFilter'

55215358 ENH: Add CVD and CVF types to VectorIndexSelectionCastImageFilter wrappings
Merge topic 'book2-text-boundaries'

c9ae43a2 DOC: Text and picture problems, book2
ENH: Adding SubdivisionQuadEdgeMeshFilters to ITK as remote module

Added triangle and edge based subdivision QuadEdgeMesh
Filters to Modules/Filtering/QuadEdgeMeshFiltering and
related tests.

Code is imported from the following Insight Journal's publication:

Wanlin Zhu, "Triangle Mesh Subdivision"
http://www.insight-journal.org/browse/publication/831

Co-authored-by: Wanlin Zhu <wanlinzhu@gmail.com>

Change-Id: I5ed91f149567d833ca22d22bf2d8135e51167ece
Merge topic 'SubdivisionRemoteModule'

f5f9a94a ENH: Adding SubdivisionQuadEdgeMeshFilters to ITK as remote module