[11u] Multiple JarUtils.java?

[Aleksey Shipilev]

See:

jdk-jdk $ find | grep JarUtils.java$
./test/lib/jdk/test/lib/util/JarUtils.java

jdk-updates-jdk11u-dev $ find | grep JarUtils.java
./test/jdk/lib/testlibrary/JarUtils.java
./test/lib/jdk/test/lib/util/JarUtils.java
./test/jaxp/javax/xml/jaxp/libs/jaxp/library/JarUtils.java

Would anyone like to untangle what had happened here, and whether we want to actually have a single
JarUtils?

-- 
Thanks,
-Aleksey