updated aadl2-nouml.genmodel
This is needed for Xtext to be able to generate with the existing ecore
model. However, with the UML2 stuff in we would need to get the meta
model and genmodels for uml2 and its dependents. We could not find all
of them and we had addressed the problem by removing the UML specific
stuff from the genmodel.

I also had to fix the subprogramAccessName feature in ProcessorCall from
identifying the type as a UML string to be an Ecore string as we had
before.

Regenerated Xtext aadl2