fix some visitors not working with records

...de/hhu/stups/codegenerator/MachineConstantsOptimizer.java

...hhu/stups/codegenerator/MachineConstantsPreprocessor.java

...hhu/stups/codegenerator/analyzers/IdentifierAnalyzer.java

...ps/codegenerator/analyzers/ParallelConstructAnalyzer.java

...ups/codegenerator/analyzers/PrimedIdentifierAnalyzer.java

...ups/codegenerator/generators/LambdaFunctionGenerator.java

.../hhu/stups/codegenerator/generators/MachineGenerator.java

...u/stups/codegenerator/generators/MachinePreprocessor.java