adapted stalang to modified Metamodel

...kit/ipd/descartes/mm/adaptation/StaAdaptationLanguage.xmi

...nstruction/StaAdaptationLanguageParsetreeConstructor.java

...ion/parser/antlr/internal/InternalStaAdaptationLanguage.g

...arser/antlr/internal/InternalStaAdaptationLanguage.tokens

...er/antlr/internal/InternalStaAdaptationLanguageLexer.java

...r/antlr/internal/InternalStaAdaptationLanguageParser.java

...aptation/services/StaAdaptationLanguageGrammarAccess.java

...t/ipd/descartes/mm/adaptation/StaAdaptationLanguage.xtext