WIP: initial structure for patches

SuperElastix/SuperElastix#42

SuperBuild/Patches/itk_png_mangle_get_uint_31.patch

+--- a/Modules/ThirdParty/PNG/src/itkpng/itk_png_mangle.h
++++ b/Modules/ThirdParty/PNG/src/itkpng/itk_png_mangle.h
+@@ -10,7 +10,7 @@ ITK.
+ 
+ The following command was used to obtain the symbol list:
+ 
+-nm lib/libitkpng-4.9.a 2> /dev/null | grep " T \| D \| R " |
++nm lib/libitkpng-4.10.a 2> /dev/null | grep " T \| D \| R " |
+  awk '{ print substr($3, 1); }' | sort | awk '!/itk_/ { print }' |
+  sed 's \(.*\) \1\ itk_\1 ' | sed 's/^/#define /'
+ 
+@@ -148,6 +148,7 @@ nm lib/libitkpng-4.9.a 2> /dev/null | grep " T \| D \| R " |
+ #define png_get_text itk_png_get_text
+ #define png_get_tIME itk_png_get_tIME
+ #define png_get_tRNS itk_png_get_tRNS
++#define png_get_uint_31 itk_png_get_uint_31
+ #define png_get_unknown_chunks itk_png_get_unknown_chunks
+ #define png_get_user_chunk_ptr itk_png_get_user_chunk_ptr
+ #define png_get_user_height_max itk_png_get_user_height_max
\ No newline at end of file

SuperBuild/Patches/itk_png_mangle_get_uint_31.txt

+Patch for http://review.source.kitware.com/#/c/22282/
+
+Applies to ITK 4.10 - 4.12