RFR: 8277310: ciReplay: @cpi MethodHandle references not resolved

[Dean Long]

It turns out replay was resolving constant pool entries for "@bci <bsm>" references, but not for "@cpi" references.  These changes fix that.

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Commit messages:
 - actually resolve @cpi references

Changes: https://git.openjdk.java.net/jdk/pull/6423/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6423&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8277310
  Stats: 60 lines in 1 file changed: 15 ins; 16 del; 29 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6423.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6423/head:pull/6423

PR: https://git.openjdk.java.net/jdk/pull/6423