Prepare Windows installer for 2.2a1.
diff --git a/PCbuild/pythoncore.dsp b/PCbuild/pythoncore.dsp
index e44a8aa..ae193d5 100644
--- a/PCbuild/pythoncore.dsp
+++ b/PCbuild/pythoncore.dsp
@@ -709,11 +709,11 @@
 

 !IF  "$(CFG)" == "pythoncore - Win32 Release"

 

-# ADD CPP /D BUILD=16

+# ADD CPP /D BUILD=21

 

 !ELSEIF  "$(CFG)" == "pythoncore - Win32 Debug"

 

-# ADD CPP /D BUILD=16

+# ADD CPP /D BUILD=21

 

 !ELSEIF  "$(CFG)" == "pythoncore - Win32 Alpha Debug"