DOC: Fix itkSetGetDecoratedInputMacro Doxygen macro.

Extra "number" argument.  Fixes SetFileName expansion for ImageFileReader for
example.

Change-Id: Id82bcf5a04ae04d4d82bd8f362985ee19b2153ad
BUG: Remove unused redefinition of NULL

Change-Id: I37238a1fdb52c6d67e944fb18aa8e11dfe8efc70
Merge topic 'RemoveVoronoiDiagramNULLdefine'

9db8f2e2 BUG: Remove unused redefinition of NULL
Merge topic 'doxygen'

f1b6e8db DOC: Fix itkSetGetDecoratedInputMacro Doxygen macro.