improved detection of unsupported constructs

src/main/java/de/tlc4b/Translator.java

src/main/java/de/tlc4b/analysis/NotSupportedConstructs.java

...n/java/de/tlc4b/analysis/UnsupportedConstructsFinder.java

...est/java/de/tlc4b/analysis/UnsupportedConstructsTest.java

src/test/java/de/tlc4b/util/TestUtil.java