RFR: 8358694: VM asserts if CodeCacheSegmentSize is not a power of 2 [v2]

[Amit Kumar]

> Makes sure that JVM exits gracefully when `CodeCacheSegmentSize` is not a power of 2.

Amit Kumar has updated the pull request incrementally with two additional commits since the last revision:

 - fix
 - move the changes in flag constraints specific file

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/25708/files
  - new: https://git.openjdk.org/jdk/pull/25708/files/55af21fd..539b3fe4

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25708&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25708&range=00-01

  Stats: 10 lines in 2 files changed: 7 ins; 3 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/25708.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25708/head:pull/25708

PR: https://git.openjdk.org/jdk/pull/25708