Add the bytes type to the build process.
diff --git a/PCbuild/pythoncore.vcproj b/PCbuild/pythoncore.vcproj
index ebaa78f..8bf9770 100644
--- a/PCbuild/pythoncore.vcproj
+++ b/PCbuild/pythoncore.vcproj
@@ -437,6 +437,9 @@
 			RelativePath="..\Objects\bufferobject.c">
 		</File>
 		<File
+			RelativePath="..\Objects\bytesobject.c">
+		</File>
+		<File
 			RelativePath="..\Objects\cellobject.c">
 		</File>
 		<File