Update Windows installer for 2.1b2.

PCbuild/BUILDno.txt

@@ -33,6 +33,8 @@ How to change the Windows build number:
 
 Windows Python BUILD numbers
 ----------------------------
+  12    2.1b2
+        20-Mar-2001
   11    2.1b1
         28-Feb-2001
   10    2.1a2

PCbuild/python20.wse

 Document Type: WSE
 item: Global
   Version=5.0
-  Title=Python 2.1 beta 1
+  Title=Python 2.1 beta 2
   Flags=00010100
   Languages=65 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
   Japanese Font Name=MS Gothic
@@ -66,7 +66,7 @@ item: End Block
 end
 item: Set Variable
   Variable=APPTITLE
-  Value=Python 2.1 beta 1
+  Value=Python 2.1 beta 2
 end
 item: Set Variable
   Variable=GROUP

PCbuild/pythoncore.dsp

@@ -739,11 +739,11 @@ SOURCE=..\Modules\getbuildinfo.c
 
 !IF  "$(CFG)" == "pythoncore - Win32 Release"
 
-# ADD CPP /D BUILD=11
+# ADD CPP /D BUILD=12
 
 !ELSEIF  "$(CFG)" == "pythoncore - Win32 Debug"
 
-# ADD CPP /D BUILD=11
+# ADD CPP /D BUILD=12
 
 !ELSEIF  "$(CFG)" == "pythoncore - Win32 Alpha Debug"