clusterer org.eclipse.jdt.core.javabuilder org.eclipse.pde.ManifestBuilder org.eclipse.pde.SchemaBuilder edu.mit.csail.relo.jdt.builder.ReloJDTBuilder org.eclipse.pde.PluginNature org.eclipse.jdt.core.javanature edu.mit.csail.relo.jdt.builder.ReloJDTBuilderProjectNature