Update Windows build to sqlite 3.6.21.
diff --git a/PCbuild/vs9to8.py b/PCbuild/vs9to8.py
index 2dfbd5d..a4e6801 100644
--- a/PCbuild/vs9to8.py
+++ b/PCbuild/vs9to8.py
@@ -24,7 +24,7 @@
 
             # Bah. VS8.0 does not expand macros in file names.
             # Replace them here.
-            lines = lines.replace('$(sqlite3Dir)', '..\\..\\..\\sqlite-3.5.9')
+            lines = lines.replace('$(sqlite3Dir)', '..\\..\\..\\sqlite-3.6.21')
             lines = lines.replace('$(bsddbDir)\\..\\..', '..\\..\\..\\db-4.7.25.0\\build_windows\\..')
             lines = lines.replace('$(bsddbDir)', '..\\..\\..\\db-4.7.25.0\\build_windows')