Attempt to fix the Windows build for _stringio and _pickle.

I don't have any win32 machine in my reach. So, I can't test this.

PC/VC6/pythoncore.dsp

@@ -137,6 +137,18 @@ SOURCE=..\..\Modules\_fileio.c
 # End Source File
 # Begin Source File
 
+SOURCE=..\..\Modules\_bytesio.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\Modules\_stringio.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\Modules\_pickle.c
+# End Source File
+# Begin Source File
+
 SOURCE=..\..\Modules\_functoolsmodule.c
 # End Source File
 # Begin Source File

PC/VS7.1/pythoncore.vcproj

@@ -370,6 +370,15 @@
 		<File
 			RelativePath="..\..\Modules\_fileio.c">
 		</File>
+		<File
+			RelativePath="..\..\Modules\_bytesio.c">
+		</File>
+		<File
+			RelativePath="..\..\Modules\_stringio.c">
+		</File>
+		<File
+			RelativePath="..\..\Modules\_pickle.c">
+		</File>
 		<File
 			RelativePath="..\..\Modules\_functoolsmodule.c">
 		</File>