* let @PluginRegistryBeanFactoryPostProcessor@ use the new one instead of the old one * renamed old @PluginRegistry@ class intro @SimplePluginRegistry@ * extracted @PluginRegistry@ interface * added some unittests for both implementations git-svn-id: svn+ssh://svn.synyx.de/var/svn/synyx/opensource/hera/trunk@4487 5a64d73e-33d6-4ccc-9058-23f8668ecac9