moving from oaw4 to mwe

A List of moved and changed libs which drives me crazy in development.
org.eclipse.type.emf.EmfMetaModel replaced by: org.eclipse.xtend.typesystem.emf.EmfMetaModel

Most important resources:
http://www.openarchitectureware.org/forum/viewtopic.php?showtopic=13930
http://wiki.eclipse.org/Xtext/Documentation/Migration