[8u60] Request for Approval: 8066952: Use a stack of types when calculating local variable types

[shanliang]

Please approve this clean backport:

Review: 
http://mail.openjdk.java.net/pipermail/serviceability-dev/2014-December/016207.html
JDK 9 changeset: http://hg.openjdk.java.net/jdk9/dev/jdk/rev/f981c65f7951
bug: https://bugs.openjdk.java.net/browse/JDK-8066952

thanks,
Shanliang