RFR: Merge lworld

[Vicente Romero]

Merge branch 'lworld' into lw5_merge_lworld

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Commit messages:
 - Merge branch 'lworld' into lw5_merge_lworld
 - Merge jdk
 - 8311663: Additional refactoring of Locale tests to JUnit
 - 8311879: SA ClassWriter generates invalid invokedynamic code
 - 8312014: [s390x] TestSigInfoInHsErrFile.java Failure
 - 8312164: Refactor Arrays.hashCode for long, boolean, double, float, and Object arrays
 - 8302987: Add uniform and spatially equidistributed bounded double streams to RandomGenerator
 - 8312392: ARM32 build broken since 8311035
 - 8311971: SA's ConstantPool.java uses incorrect computation to read long value in the constant pool
 - 8312166: (dc) DatagramChannel's socket adaptor does not release carrier thread when blocking in receive
 - ... and 93 more: https://git.openjdk.org/valhalla/compare/96b0eba3...96edb016

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - lw5: https://webrevs.openjdk.org/?repo=valhalla&pr=917&range=00.0
 - lworld: https://webrevs.openjdk.org/?repo=valhalla&pr=917&range=00.1

Changes: https://git.openjdk.org/valhalla/pull/917/files
  Stats: 23264 lines in 717 files changed: 14383 ins; 7321 del; 1560 mod
  Patch: https://git.openjdk.org/valhalla/pull/917.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/917/head:pull/917

PR: https://git.openjdk.org/valhalla/pull/917