Hi, please review this change to improve startup/warmup characteristics and performance of the immutable collection factories:
Bug: https://bugs.openjdk.java.net/browse/JDK-8166365 Webrev: http://cr.openjdk.java.net/~redestad/8166365/webrev.01/ While filed as an RFE, and a more thorough examination of the hierarchy of the ImmutableCollection classes has been discussed[1], this more limited patch resolves some immediate issues related to module system bootstrap and is therefore motivated to push to 9. Thanks! /Claes [1] we should likely not inherit Iterator classes that check for co-modification etc,
