PythonQt Code

- removed warnings
- fixed some memory leaks (only on cleanup)
- fixed bad QString usage as %s argument
- added PythonQtQFileImporter, which implements a default importer using QFile
- added PythonQt::self()->installDefaultImporter() to enable the new default importer
- modified example to make use of new importer
- removed ugly goto, which was copied from original zip import

merged in features from the MeVisLab repository
- added createModuleFromFile/createModuleFromScript/createUniqueModule
- switched object destruction to use QPointer and lazy wrapper removal to avoid expensive objectDestroyed signal connections
- added hash() support for PythnQtWrapper object
- added support for signal to python function connections where the function has less arguments than the emitted signal
- added setQObject[NoLonger]WrappedCallback API to support external reference counting on QObjects that are exposed to PythonQt
- implemented flush on std redirect to support python logging framework
- improved QVariant printing and fixed print error on MacX

reorganized SVN tree into branches, tags and trunk