jjg: We might want to go through the files in the following list and see if we can bring them in line with our normal standards of just using ASCII text.

langtools/test/tools/javac/completion/example/B.class: compiled Java class data, version 45.3
langtools/test/tools/javadoc/sourceOnly/p/NonSource.class: compiled Java class data, version 46.0 (Java 1.2)