I saw requests for updating libtool, something I also need for the Windows CE port. This patch does this, and also makes expat use automake. I found that auto-tools are happiest if they work together. I hope you find this setup convenient, you get all the standard features this way (make distcheck for example).
The patch also adds support for Windows CE.
As expat is a dependency of dbus-daemon, we are very interested in seeing the Windows CE port merged for the KDE project. Please let me know if there are any issues you want to see resolved, and with any other questions and suggestions. I can help you with other auto-tools related problems as well, if necessary.