Add ViewVC link from web page.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@58119 91177308-0d34-0410-b5e6-96231b3b80d8

www/menu.html.incl

@@ -24,7 +24,8 @@
     <a href="http://lists.cs.uiuc.edu/mailman/listinfo/cfe-dev">cfe-dev</a>
     <a href="http://lists.cs.uiuc.edu/mailman/listinfo/cfe-commits">cfe-commits</a>
     <a href="http://llvm.org/bugs/">Bug Reports</a>
-    <a href="http://llvm.org/svn/llvm-project/cfe/trunk/">Browse Source</a>
+    <a href="http://llvm.org/svn/llvm-project/cfe/trunk/">Browse SVN</a>
+    <a href="http://llvm.org/viewvc/llvm-project/cfe/trunk/">Browse ViewVC</a>
     <a href="http://clang.llvm.org/doxygen/">doxygen</a>
     <a href="http://keeda.stanford.edu/~ddunbar/clang/references.html">Spec. References</a>
     <a href="http://keeda.stanford.edu/~ddunbar/clang/coverage/">Testing Coverage</a>