Review request for JMC-6582: ItemTreeBuilder is slow and not interruptible

[Henrik Dafgård]

Hi all,

Please review this patch for improving the performance of the
ItemTreeBuilder encapsulation tree generation and adding functionality to
allow interrupting it.

JIRA: https://bugs.openjdk.java.net/browse/JMC-6582
Webrev: http://cr.openjdk.java.net/~hdafgard/JMC-6582/webrev.0/


Cheers,
Henrik Dafgård