Document vtkTypedDataArray<vtkIdType>::GetDataArray() behavior.

Add some notes explaining that an extra step must be taken when
subclasses vtkTypedDataArray to hold vtkIdType elements.

Change-Id: I0063c97529e5dd15713186184920c6100ab5452c
Install CMake/vtkMakeInstantiator.cmake file

gdcm needs this file to be installed

Change-Id: I01912af36aef5e49d09c5f165ab9570954a40b91
COMP: Memory leak

Valgrind detected a memory leak. Test faied to delete filename.

Change-Id: I0b101c01fb694e84f04976781f5e3744819e00e8
Merge topic 'Valgrind_TestDelimitedTextReader2' into master

71f44a01 COMP: Memory leak
Merge topic 'InstallCMakeInstantiator' into master

89630c0d Install CMake/vtkMakeInstantiator.cmake file
Merge topic 'vtkIdType-mapped-array-doc' into master

c4cd8246 Document vtkTypedDataArray<vtkIdType>::GetDataArray() behavior.