RFR: Scope locals tng

[Andrew Haley]

Better, obvs. Because it's newer.

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

Commit messages:
- Oops
- docs
- Tests
- Update
- Delete changes
- Save snapshot
- Save snapshot
- Save snapshot
- Progress with TWR-Style bindings.
- Intermediate
- ... and 22 more: https://git.openjdk.java.net/loom/compare/29922075...307ee8c2

Changes: https://git.openjdk.java.net/loom/pull/82/files
Webrev: https://webrevs.openjdk.java.net/?repo=loom&pr=82&range=00
Stats: 349 lines in 5 files changed: 279 ins; 46 del; 24 mod
Patch: https://git.openjdk.java.net/loom/pull/82.diff
Fetch: git fetch https://git.openjdk.java.net/loom pull/82/head:pull/82

PR: https://git.openjdk.java.net/loom/pull/82