Implemented org.genericsystem.kernel.services.
DependenciesService::isMetaOf()
 Implemented org.genericsystem.kernel.services.
DependenciesService::isInstanceOf()
 Added org.genericsystem.kernel.RelationTest tests on relations and
metaRelations
 Bug fix  org.genericsystem.kernel.services.BindingService::adjustMeta()
	we call isMetaOf instead of isSuperOf.
 Bug fix in org.genericsystem.cache::GetInstance()
 Bug fix in org.genericsystem.cache::HolderTest.
 Bug fix in org.genericsystem.impl::HolderTest.
 Bug fix in org.genericsystem.kernel::HolderTest.