[jdk11u-dev] RFR: JDK-8263407 SPARC64 detection fails on Athena (SPARC64-X)

[Larry-N]

Backport of fix  8263407, details of implementation is in thread: 
https://mail.openjdk.java.net/pipermail/jdk-updates-dev/2021-April/005999.html
Was built and run tier1 tests on Solaris machine

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Commit messages:
 - Whitespace corrections
 - JDK-8263407

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/106/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=106&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8263407
  Stats: 21 lines in 3 files changed: 14 ins; 1 del; 6 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/106.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/106/head:pull/106

PR: https://git.openjdk.java.net/jdk11u-dev/pull/106