Hemispherical caps for cylinder to form capsules with texture coordinates

Ability to transform the cylinder source to a capsule source with texture coordinates with hemispherical end caps.

vtkCapsuleSource has been deprecated in favor of vtkCylinderSource with CappingOn() and CapsuleCapOn() because:

• Polar cap geometry

  vtkCapsuleSource(old)	vtkCylinderSource (new)

• Texture coordinates vtkCapsuleSource did not provide texture coordinates owing to geometry interface between the caps and cylindrical portion of the capsule.

  vtkCapsuleSource(old)	vtkCylinderSource (new)

Supersedes !9828

Backport: release