Add a virtual destructor to KdePluginImplementationBase. Without this, the KdePluginImplementation destructor was not being called (I don't know why)
Add a virtual destructor to KdePluginImplementationBase. Without this, the KdePluginImplementation destructor was not being called (I don't know why)

git-svn-id: e31799a7ad59d6ea355ca047c69e0aee8a59fcd3@283 53f5c7ee-bee3-0310-bbc5-ea0e15fffd5e

ianmartin/opensync,ianmartin/opensync