RFR: 8316196: VarHandleSegmentViewBase::newIllegalArg... to use hexadecimal form

[Per Minborg]

This PR proposes to use hexadecimal formatting for raw addresses in `VarHandleSegmentViewBase`.

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Commit messages:
 - VarHandleSegmentViewBase::newIllegalArg... to use hexadecimal form

Changes: https://git.openjdk.org/jdk/pull/15742/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15742&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316196
  Stats: 8 lines in 2 files changed: 7 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/15742.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15742/head:pull/15742

PR: https://git.openjdk.org/jdk/pull/15742