Integrated: Merge bworld

[Vicente Romero]

Merge branch 'bworld' into bworld-apis_merge_bworld
# Conflicts:
#	src/jdk.jpackage/share/classes/jdk/jpackage/internal/CfgFile.java

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Commit messages:
 - Merge branch 'bworld' into bworld-apis_merge_bworld
 - Merge bworld
 - Merge bworld
 - Merge bworld
 - Merge bworld
 - Merge bworld
 - Support preview features in libraries

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

Changes: https://git.openjdk.org/valhalla/pull/2156/files
  Stats: 156 lines in 84 files changed: 15 ins; 3 del; 138 mod
  Patch: https://git.openjdk.org/valhalla/pull/2156.diff
  Fetch: git fetch https://git.openjdk.org/valhalla.git pull/2156/head:pull/2156

PR: https://git.openjdk.org/valhalla/pull/2156