RFR: 8306111: PPC64: RT call after thaw with exception requires larger ABI section

[Richard Reingruber]

After thawing a frame to forward an exception, we call `SharedRuntime::exception_handler_for_return_address()`. The frame just thawed lacks the required `frame::native_abi_reg_args` though. It is only equipped with `frame::java_abi`. This change pushes a new frame with the required ABI.

Furthermore the change enables `VMContinuations` by default also for PPC64 big endian.

Testing: jdk_loom on little and big endian.

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Commit messages:
 - Copyright year
 - Enable VMContinuations also on big endian PPC
 - Fix

Changes: https://git.openjdk.org/jdk/pull/13505/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13505&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8306111
  Stats: 5 lines in 2 files changed: 3 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/13505.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13505/head:pull/13505

PR: https://git.openjdk.org/jdk/pull/13505