RFR: 8311661: Resolve duplicate symbol of StringTable::StringTable with JDK static linking [v2]

[Jiangli Zhou]

> Move StringTable to JavaClassFile namespace.

Jiangli Zhou has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Merge branch 'master' into JDK-8311661
 - Move  '} // namespace JavaClassFile' to after '#endif //INCLUDE_CDS_JAVA_HEAP'.
 - 8311661: Resolve duplicate symbol of StringTable::StringTable with JDK static linking

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Changes:
  - all: https://git.openjdk.org/jdk/pull/14808/files
  - new: https://git.openjdk.org/jdk/pull/14808/files/cb9a4a22..c31ad972

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14808&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14808&range=00-01

  Stats: 594 lines in 42 files changed: 293 ins; 179 del; 122 mod
  Patch: https://git.openjdk.org/jdk/pull/14808.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14808/head:pull/14808

PR: https://git.openjdk.org/jdk/pull/14808