Add filter files for VS2010 Solution browser

Trac #21647

git-svn-id: https://angleproject.googlecode.com/svn/trunk@1300 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/.gitignore b/.gitignore
index e064f12..c76963a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,8 +1,9 @@
 Debug
 Release
+*.sdf
 *.ncb
 *.suo
 *.vcproj.*
-*.vcxproj.*
+*.vcxproj.user
 patches-*