Add AST files to VC6 build.

PC/VC6/pythoncore.dsp

@@ -173,6 +173,14 @@ SOURCE=..\..\Modules\arraymodule.c
 # End Source File
 # Begin Source File
 
+SOURCE=..\..\Python\asdl.c
+# End Source File
+# Begin Source File
+
+SOURCE=..\..\Python\ast.c
+# End Source File
+# Begin Source File
+
 SOURCE=..\..\Modules\audioop.c
 # End Source File
 # Begin Source File
@@ -221,6 +229,10 @@ SOURCE=..\..\Python\codecs.c
 # End Source File
 # Begin Source File
 
+SOURCE=..\..\Objects\codeobject.c
+# End Source File
+# Begin Source File
+
 SOURCE=..\..\Modules\collectionsmodule.c
 # End Source File
 # Begin Source File
@@ -511,6 +523,10 @@ SOURCE=..\python_nt.rc
 # End Source File
 # Begin Source File
 
+SOURCE=..\..\Python\Python-ast.c
+# End Source File
+# Begin Source File
+
 SOURCE=..\..\Python\pythonrun.c
 # End Source File
 # Begin Source File