fix ArithmeticbinaryExpressionNodeConverterTest
Merge branch 'master' of
https://github.com/swp-uebersetzerbau-ss13/javabite

Conflicts:
	javabite-code-gen/src/test/java/swp_compiler_ss13/javabite/codegen/ArithmeticBinaryExpressionNodeConverterTest.java
	javabite-code-gen/src/test/java/swp_compiler_ss13/javabite/codegen/CastingAst2CodeConverterTest.java