RFR: Merge jdk8u:master

[Andrew John Hughes]

Merge jdk8u352-b05

-------------

Commit messages:
 - Merge jdk8u352-b05
 - 8292688: Support Security properties in security.testlibrary.Proc
 - 7131823: bug in GIFImageReader
 - 8139668: Generate README-build.html from markdown
 - 8173339: AArch64: Fix minimum stack size computations
 - 8049228: Improve multithreaded scalability of InetAddress cache
 - 8285497: Add system property for Java SE specification maintenance version
 - 8232950: SUNPKCS11 Provider incorrectly check key length for PSS Signatures.
 - 8039955: [TESTBUG] jdk/lambda/LambdaTranslationTest1 - java.lang.AssertionError: expected [d:1234.000000] but found [d:1234,000000]
 - 8254318: Remove .hgtags
 - ... and 5 more: https://git.openjdk.org/shenandoah-jdk8u/compare/0562578d...81d58f87

The merge commit only contains trivial merges, so no merge-specific webrevs have been generated.

Changes: https://git.openjdk.org/shenandoah-jdk8u/pull/27/files
  Stats: 15497 lines in 53 files changed: 2258 ins; 12004 del; 1235 mod
  Patch: https://git.openjdk.org/shenandoah-jdk8u/pull/27.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah-jdk8u.git pull/27/head:pull/27

PR: https://git.openjdk.org/shenandoah-jdk8u/pull/27