Integrated: 8255856: Generate RestrictedField attributes from annotations

[Srikanth Adayapalam]

Enable restricted type experiments with a fine grained control.

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Commit messages:
 - Fix white space issues
 - 8255856: Generate RestrictedField attributes from annotations

Changes: https://git.openjdk.java.net/valhalla/pull/277/files
 Webrev: https://webrevs.openjdk.java.net/?repo=valhalla&pr=277&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8255856
  Stats: 157 lines in 4 files changed: 156 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/277.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/277/head:pull/277

PR: https://git.openjdk.java.net/valhalla/pull/277