RFR: 8248584: Enable CHECK_UNHANDLED_OOPS for Windows fastdebug builds

[Harold Seigel]

Please review this small change to enable CHECK_UNHANDLED_OOPs for Windows fastdebug builds.  The change was tested by running Mach5 tiers 1-6 on Windows-x64-debug.

Thanks, Harold

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Commit messages:
 - 8248584: Enable CHECK_UNHANDLED_OOPS for Windows fastdebug builds

Changes: https://git.openjdk.java.net/jdk/pull/6023/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6023&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8248584
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6023.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6023/head:pull/6023

PR: https://git.openjdk.java.net/jdk/pull/6023