Added a test infrastructure that simulates eclipse with diet-parse, type-binding and so forth. Similar to eclipse, the test needs to be executed with lombok as vm-agent. @Delegate runs with this setup, sadly val does not, at least for now.

And as expected the tests shows that @Synchronized and @SneakyThrows are currently broken for eclipse but not for ecj.

test/transform/resource/after-eclipse/LoggerSlf4jAlreadyExists.java

@@ -0,0 +1,6 @@
+@lombok.extern.slf4j.Slf4j class LoggerSlf4jAlreadyExists {
+  int log;
+  LoggerSlf4jAlreadyExists() {
+    super();
+  }
+}