[jdk11u-dev] RFR: 8299234: JMX Repository.query performance

[Alexey Bakhtin]

Clean backport of JDK-8299234 to JDK11u 

Performance of the original code:
Benchmark                                 (N)   Mode  Cnt    Score    Error  Units
JmxBenchmark.queryMBeansForMyObjectName  1000  thrpt   10   78.090 ±  0.206  ops/s
JmxBenchmark.queryMBeansForObjectName    1000  thrpt   10  144.837 ±  0.618  ops/s
JmxBenchmark.queryNamesForMyObjectName   1000  thrpt   10   77.323 ±  1.159  ops/s
JmxBenchmark.queryNamesForObjectName     1000  thrpt   10  144.938 ±  3.588  ops/s

Performance after patch applied:
Benchmark                                 (N)   Mode  Cnt    Score    Error  Units
JmxBenchmark.queryMBeansForMyObjectName  1000  thrpt   10  108.009 ±  9.615  ops/s
JmxBenchmark.queryMBeansForObjectName    1000  thrpt   10  233.958 ± 12.616  ops/s
JmxBenchmark.queryNamesForMyObjectName   1000  thrpt   10  108.239 ± 10.117  ops/s
JmxBenchmark.queryNamesForObjectName     1000  thrpt   10  258.043 ±  5.981  ops/s

javax/naming and javax/management tests passed

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Commit messages:
 - Backport 9a797228f3576720196d5e3bf4b204a5e3f87376

Changes: https://git.openjdk.org/jdk11u-dev/pull/1762/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1762&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8299234
  Stats: 147 lines in 4 files changed: 19 ins; 115 del; 13 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1762.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1762/head:pull/1762

PR: https://git.openjdk.org/jdk11u-dev/pull/1762