* Thomas Moenicke fixed the qtruby cmake build so it works on all machines by adding a KDE_EXPORT macro to Init_qtruby4().
Big thanks to Thomas and Guillaume Laurent for getting it all working.

* Added calling slots directly in custom C++ QObject classes.
If a method isn't found in the Smoke library, and the instance is a kind of QObject with a class not in the Smoke library, then look for a slot matching the method name and invoke it. Thanks to Eric Landuy for the idea and discussion leading to implementing it.

* Added a check for QtDBus in the qtruby cmake file and set a define of -DQT_QTDBUS if the library was found

* Changed the ADD_LIBRARY line in the qtruby cmake file to use MODULE so that a bundle should be built on Mac OS X.