ENH: Wrap new variant of itkLBFGS2Optimizerv4

The new optimizer is based on modern c++ code rather than converted
fortran code.  The new optimizer also has a few interesting modes
that are not available in the original fortran implementation.

Modules/Numerics/Optimizersv4/wrapping/itkLBFGS2Optimizerv4.wrap

@@ -0,0 +1,5 @@
+set(WRAPPER_AUTO_INCLUDE_HEADERS OFF)
+itk_wrap_include("itkLBFGS2Optimizerv4.h")
+
+itk_wrap_simple_class("itk::LBFGS2Optimizerv4Enums")
+itk_wrap_simple_class("itk::LBFGS2Optimizerv4" POINTER_WITH_SUPERCLASS)