RFR: JDK-8161230 ClassLoader: add resource methods returning java.util.stream.Stream

[Patrick Reinhart]

Hi Alan,
Hi Paul,

Here is the first revision of the implementation based on our earlier 
conversation.

http://cr.openjdk.java.net/~reinhapa/reviews/8161230/webrev.00 
<http://cr.openjdk.java.net/~reinhapa/reviews/8161230/webrev.00>

- Patrick