Cairngorm Modules Library and Flex 3

We use conditional compilation and Maven in order to generate the a Flex 3 and Flex 4 version of all libraries. The module library was trickier to setup but I think we're almost there. But you can build it yourself from trunk with using the Flex3 conditional compilation flag and with removing the classes that don't compile (that's i.e. what we want Maven to do for us).