RFR: 8354453: Don't strcpy in os::strdup, use memcpy instead [v3]

[Anton Artemov]

> Use memcpy instead of strcpy in os::strdup, 1 string pass fewer.
> 
> Tested in tiers 1-3, all tests pass.

Anton Artemov has updated the pull request incrementally with one additional commit since the last revision:

  8354453: Addressed the reviewer's comments.

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/24651/files
  - new: https://git.openjdk.org/jdk/pull/24651/files/80f2a7ea..d24da890

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=24651&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=24651&range=01-02

  Stats: 2 lines in 1 file changed: 0 ins; 1 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/24651.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/24651/head:pull/24651

PR: https://git.openjdk.org/jdk/pull/24651