RFR: Freeze functions [v5]

[Robbin Ehn]

> Freeze functions

Robbin Ehn has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains one commit:

  Freeze funcs

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Changes: https://git.openjdk.java.net/loom/pull/156/files
 Webrev: https://webrevs.openjdk.java.net/?repo=loom&pr=156&range=04
  Stats: 219 lines in 2 files changed: 84 ins; 78 del; 57 mod
  Patch: https://git.openjdk.java.net/loom/pull/156.diff
  Fetch: git fetch https://git.openjdk.java.net/loom pull/156/head:pull/156

PR: https://git.openjdk.java.net/loom/pull/156