I think there is no explicit target "install.jbpm.into.jboss" any more.
But now there are:
install.guvnor.into.jboss
install.designer.into.jboss
and
install.jBPM-gwt-console.into.jboss
jBPM is just the engine. You then use guvnor to deploy your bpmn files.
Regards.