RFR: 8271165: ProblemList serviceability/dcmd/gc/HeapDumpAllTest.java on X64

[Daniel D.Daugherty]

Trivial fixes:
JDK-8271165 ProblemList serviceability/dcmd/gc/HeapDumpAllTest.java on X64
JDK-8271166 ProblemList applications/jcstress/copy.java on Linux-X64

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Commit messages:
 - 8271166: ProblemList applications/jcstress/copy.java on Linux-X64
 - 8271165: ProblemList serviceability/dcmd/gc/HeapDumpAllTest.java

Changes: https://git.openjdk.java.net/jdk/pull/4881/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4881&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8271165
  Stats: 4 lines in 1 file changed: 4 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4881.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4881/head:pull/4881

PR: https://git.openjdk.java.net/jdk/pull/4881