* KawaScriptEngine.java (compile): Better fix to parse.

The 2020-03-24 change also set the PARSE_CURRENT_NAMES flag,
which causes new compiled classes to reference fields in old classes,
which is a problem when they have the same class name ...
Partially fixes GitLab issue #73 "[javax.script] In lambda,
name resolution does not include the EngineManager's global scope".
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passed #498485795