[lworld] RFR: changes based on late comments concerning 8247795 fix

[Harold Seigel]

Changes based on comments from Mandy after the fix for 8247795 was pushed:
1. Remove checks for inline unsafe anonymous classes.
2. Add comment about static factory methods.
3. Improve test

Tested with tiers 1-2 on windows, linux, and mac, and tiers 3-5 on linux.

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Commit messages:
 - changes based on late comments concerning 8247795 fix

Changes: https://git.openjdk.java.net/valhalla/pull/99/files
 Webrev: https://webrevs.openjdk.java.net/valhalla/99/webrev.00
  Stats: 26 lines in 4 files changed: 8 ins; 9 del; 9 mod
  Patch: https://git.openjdk.java.net/valhalla/pull/99.diff
  Fetch: git fetch https://git.openjdk.java.net/valhalla pull/99/head:pull/99

PR: https://git.openjdk.java.net/valhalla/pull/99