allowSomeOfJavaLang

Do NOT allow everything in java.reflect, because this include Process, System and other dangerous classes! Allows interfaces : Appendable, CharSequence, Comparable, Iterable, Readable, Runnable. Allows classes : Character.Subset, Character.UnicodeBlock, Enum, Math, Number, Object, StrictMath, String, StringBuilder, StringBuffer, Throwable Allows all exceptions in java.util.

Also adds the package containing uk.co.nickthecoder.feather.reflect.System. Consider adding feather's reflect package to FeatherCompiler.impliedImportPackages at index 0 (ahead of java.reflect), to hide java.reflect.System and replace it with the safe feather version.