RFR: 8360474: Add missing include guards for some HotSpot headers [v2]

[Qizheng Xing]

> Some HotSpot header files are missing include guards, which may cause compilation errors if these files are included multiple times. This patch adds include guards for them.

Qizheng Xing has updated the pull request incrementally with one additional commit since the last revision:

  Remove extra trailing new line

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Changes:
  - all: https://git.openjdk.org/jdk/pull/25968/files
  - new: https://git.openjdk.org/jdk/pull/25968/files/db5e263f..75d90ef0

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25968&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25968&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/25968.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25968/head:pull/25968

PR: https://git.openjdk.org/jdk/pull/25968