Update master Windows build-number list for 2.1.2c1.
diff --git a/PCbuild/BUILDno.txt b/PCbuild/BUILDno.txt
index 148924d..da866f4 100644
--- a/PCbuild/BUILDno.txt
+++ b/PCbuild/BUILDno.txt
@@ -33,6 +33,8 @@
 
 Windows Python BUILD numbers
 ----------------------------
+  30    2.1.2c1
+        10-Jan-2002
   29    CVS development
         21-Dec-2001
   28    2.2 final