[jdk11u-dev] RFR: Merge jdk11u:master

[Goetz Lindenmaier]

Merge build tag 11.0.17-ga from jdk11u to jdk11u-dev

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Commit messages:
 - Merge
 - 8295057: [11u] Remove designator DEFAULT_PROMOTED_VERSION_PRE=ea for release 11.0.17
 - 8286918: Better HttpServer service
 - 8286519: Better memory handling
 - 8286511: Improve macro allocation
 - 8288508: Enhance ECDSA usage
 - 8286910: Improve JNDI lookups
 - 8289366: Improve HTTP/2 client usage
 - 8287446: Enhance icon presentations
 - 8286533: Key X509 usages
 - ... and 5 more: https://git.openjdk.org/jdk11u-dev/compare/f688a0ff...282be609

The webrevs contain the adjustments done while merging with regards to each parent branch:
 - master: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1463&range=00.0
 - jdk11u:master: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1463&range=00.1

Changes: https://git.openjdk.org/jdk11u-dev/pull/1463/files
  Stats: 958 lines in 35 files changed: 670 ins; 80 del; 208 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1463.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1463/head:pull/1463

PR: https://git.openjdk.org/jdk11u-dev/pull/1463