new animated sample to show subpixel translate bug with high quality scaling

gyp/SampleApp.gyp

 #
 {
   'variables': {
     #manually set sample_pdf_file_viewer to 1 to have the PdfViewer in SampleApp
     'sample_pdf_file_viewer%': 0,
   },
   'targets': [
     {
       'target_name': 'SampleApp',
       'type': 'executable',
@@ skipping 81 matching lines @@
         '../samplecode/SamplePolyToPoly.cpp',
         '../samplecode/SampleRegion.cpp',
         '../samplecode/SampleRepeatTile.cpp',
         '../samplecode/SampleRotateCircles.cpp',
         '../samplecode/SampleShaders.cpp',
         '../samplecode/SampleShaderText.cpp',
         '../samplecode/SampleSkLayer.cpp',
         '../samplecode/SampleSlides.cpp',
         '../samplecode/SampleStringArt.cpp',
         '../samplecode/SampleStrokePath.cpp',
+        '../samplecode/SampleSubpixelTranslate.cpp',
         '../samplecode/SampleText.cpp',
         '../samplecode/SampleTextAlpha.cpp',
         '../samplecode/SampleTextBox.cpp',
         '../samplecode/SampleTextOnPath.cpp',
         '../samplecode/SampleTextureDomain.cpp',
         '../samplecode/SampleTiling.cpp',
         '../samplecode/SampleTinyBitmap.cpp',
         '../samplecode/SampleUnpremul.cpp',
         '../samplecode/SampleVertices.cpp',
         '../samplecode/SampleXfermodesBlur.cpp',
@@ skipping 181 matching lines @@
         }],
       ],
       'msvs_settings': {
         'VCLinkerTool': {
           'SubSystem': '2',
         },
       },
     },
   ],
 }