RFR: 8292384: Convert AdapterHandlerTable to ResourceHashtable

[Coleen Phillimore]

The adapter handler table was a Hashtable, and has been converted to Resourcehashtable, without any complications.
Tested with tier1-3 (4-7) previously with other changes.

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Commit messages:
 - 8292384: Convert AdapterHandlerTable to ResourceHashtable

Changes: https://git.openjdk.org/jdk/pull/9885/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=9885&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8292384
  Stats: 197 lines in 2 files changed: 21 ins; 112 del; 64 mod
  Patch: https://git.openjdk.org/jdk/pull/9885.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9885/head:pull/9885

PR: https://git.openjdk.org/jdk/pull/9885