make indexing a bit faster on IDB git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1771 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1736 b08c6af1-5177-4d33-ba66-4b1c6b8b522a