Boolean variables in mappings lead to non-compilable code

[maxkratz]

Related test case: https://github.com/Echtzeitsysteme/gips-tests/blob/feature/add-var-boolean-bug-test-case/gipsl.all.build.varsbooleanbug/src/gipsl/all/build/varsbooleanbug/Model.gipsl

mapping n2n with mapVnode {
	var b : EBoolean
};

^this creates non-compilable code in N2nMapping.java:

Description Resource Path Location Type
The method round(float) in the type Math is not applicable for the arguments (boolean) N2nMapping.java /gipsl.all.build.varsbooleanbug/src-gen/gipsl/all/build/varsbooleanbug/api/gips/mapping line 112 Java Problem
The method setValue(Integer) in the type ILPBinaryVariable is not applicable for the arguments (boolean) N2nMapping.java /gipsl.all.build.varsbooleanbug/src-gen/gipsl/all/build/varsbooleanbug/api/gips/mapping line 60 Java Problem
Type mismatch: cannot convert from Integer to boolean N2nMapping.java /gipsl.all.build.varsbooleanbug/src-gen/gipsl/all/build/varsbooleanbug/api/gips/mapping line 56 Java Problem