Port xxd.pl to xxd.py (Perl to Python)

Source/build/ConvertFileToHeaderWithCharacterArray.gypi

Index: Source/build/ConvertFileToHeaderWithCharacterArray.gypi
diff --git a/Source/build/ConvertFileToHeaderWithCharacterArray.gypi b/Source/build/ConvertFileToHeaderWithCharacterArray.gypi
index cfcb91b7294b691a3b9ebc8a09573be7adff397f..1a574b268f5e0aa60418c621dc68e1eebf7e3647 100644
--- a/Source/build/ConvertFileToHeaderWithCharacterArray.gypi
+++ b/Source/build/ConvertFileToHeaderWithCharacterArray.gypi
@@ -43,18 +43,19 @@
     {
       'action_name': 'ConvertFileToHeaderWithCharacterArray',
       'inputs': [
-        '../build/scripts/xxd.pl',
+        '../build/scripts/xxd.py',
         '<(input_file_path)',
       ],
       'outputs': [ '<@(output_file_path)', ],
       'action': [
-        '<(perl_exe)',
-        '../build/scripts/xxd.pl',
+        'python',
+        '../build/scripts/xxd.py',
         '<(character_array_name)',
         '<(input_file_path)',
         '<@(_outputs)'
       ],
       'message': 'Generating <(output_file_path) from <(input_file_path)',
+      'msvs_cygwin_shell': 0,
     },
   ],