[crac] RFR: Fix builds

[Anton Kozlov]

Fix builds in vairous configurations

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Commit messages:
 - Fix s390 build
 - Fix riscv build
 - Fix zero and cross builds
 - Fix minimal build
 - Fix linux-x86

Changes: https://git.openjdk.org/crac/pull/104/files
 Webrev: https://webrevs.openjdk.org/?repo=crac&pr=104&range=00
  Stats: 38 lines in 10 files changed: 28 ins; 3 del; 7 mod
  Patch: https://git.openjdk.org/crac/pull/104.diff
  Fetch: git fetch https://git.openjdk.org/crac.git pull/104/head:pull/104

PR: https://git.openjdk.org/crac/pull/104