RFR: Cleanup for v1 [v3]

[Andrew Haley]

> This is the Big Diff that removes scope locals, Lifetimes, etc. I've left the virtual machine support in for now. I'm also going to create a separate branch with the simple virtual ThreadLocal support + Lifetimes, and we'll see what that looks like.

Andrew Haley has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains four commits:

 - Remove Lifetimes and scope variables
 - Remove Lifetimes and scope variables
 - Remove Lifetimes and scope variables
 - Remove Lifetimes and scope variables

-------------

Changes: https://git.openjdk.java.net/loom/pull/18/files
 Webrev: https://webrevs.openjdk.java.net/?repo=loom&pr=18&range=02
  Stats: 1469 lines in 14 files changed: 0 ins; 1466 del; 3 mod
  Patch: https://git.openjdk.java.net/loom/pull/18.diff
  Fetch: git fetch https://git.openjdk.java.net/loom pull/18/head:pull/18

PR: https://git.openjdk.java.net/loom/pull/18