Fix #13210. Port the Windows build from VS2008 to VS2010.
diff --git a/.hgignore b/.hgignore
index dc612b3..1eb60c0 100644
--- a/.hgignore
+++ b/.hgignore
@@ -66,6 +66,7 @@
 PCbuild/*.bsc
 PCbuild/*.user
 PCbuild/*.suo
+PCbuild/*.*sdf
 PCbuild/Win32-temp-*
 PCbuild/x64-temp-*
 __pycache__