STYLE: Replace itkStaticConstMacro with static constexpr

Use static constexpr directly now that C++11 conformance
is required by all compilers.

:%s/itkStaticConstMacro *( *\([^,]*\),[ \_s]*\([^,]*\),\_s*\([^)]*\)) */static constexpr \2 \1 = \3/ge

Author: hjmjohnson

include/itkCoocurrenceTextureFeaturesImageFilter.h

@@ -134,7 +134,7 @@ class ITK_TEMPLATE_EXPORT CoocurrenceTextureFeaturesImageFilter
 
 
   /** Specify the default number of bins per axis */
-  itkStaticConstMacro( DefaultBinsPerAxis, unsigned int, 256 );
+  static constexpr unsigned int DefaultBinsPerAxis = 256 ;
 
   /**
    * Set the offsets over which the intensities pairs will be computed.

include/itkFirstOrderTextureFeaturesImageFilter.h

@@ -83,8 +83,7 @@ class ITK_TEMPLATE_EXPORT FirstOrderTextureFeaturesImageFilter:
   typedef typename TOutputImage::PixelType           OutputPixelType;
 
   /** Image related typedefs. */
-  itkStaticConstMacro(ImageDimension, unsigned int,
-                      TInputImage::ImageDimension);
+  static constexpr unsigned int ImageDimension = TInputImage::ImageDimension;
 protected:
 
   unsigned int GetNumberOfOutputComponents() { return 8;}

include/itkRunLengthTextureFeaturesImageFilter.h

@@ -147,7 +147,7 @@ class ITK_TEMPLATE_EXPORT RunLengthTextureFeaturesImageFilter
 
 
   /** Specify the default number of bins per axis */
-  itkStaticConstMacro( DefaultBinsPerAxis, unsigned int, 256 );
+  static constexpr unsigned int DefaultBinsPerAxis = 256 ;
 
   /**
    * Set the offsets over which the intensity/distance pairs will be computed.