[ecore4CPP] - add Metalevel implementation for EObject::eContents and EObject::eAllContents - change Return-Type of EObject::eContents and EObject::eAllContents - rename Attribute eContens to eContentUnion to clarify different possibilities to realize eContens
[ecore4CPP]
- add Metalevel implementation for EObject::eContents and EObject::eAllContents
- change Return-Type of EObject::eContents and EObject::eAllContents
- rename Attribute eContens to eContentUnion to clarify different possibilities to realize eContens

MDE4CPP/MDE4CPP,MDE4CPP/MDE4CPP,MDE4CPP/MDE4CPP