RFR: 8301267: Update of config.guess broke build on WSL

Fri Jan 27 21:17:58 UTC 2023

After JDK-8300805, config.guess has changed output when running on WSL. This is caused by the autoconf-config.guess now reporting  it as `x86_64-pc-linux-gnu` instead of `x86_64-unknown-linux-gnu`, and our wrapper script is expecting the latter.

This patch makes the wrapper script worth with either variant.

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Commit messages:
 - JDK-8301267

Changes: https://git.openjdk.org/jdk/pull/12268/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12268&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8301267
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/12268.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12268/head:pull/12268

PR: https://git.openjdk.org/jdk/pull/12268