RFR: 8324865: windows-x64-slowdebug still does not build after JDK-8324840 [v2]

[Vladimir Kozlov]

> [~jwaters] commented in the PR [#17613](https://github.com/openjdk/jdk/pull/17613) that on windows we have strtok_s instead of strtok_r. We may need to #include "runtime/os.hpp" which defined strtok_r for windows instead of <string.hpp>. 
> 
> Including os.hpp will increase compilation time for all files which inclide "stringUtils.hpp".
> I suggest to move code from .hpp to .cpp file. It is used only by c2 and inlining of this code is not too important.
> 
> Tested tier1 and tier2 builds with precompiled headers off.

Vladimir Kozlov has updated the pull request incrementally with one additional commit since the last revision:

  Update fix

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/17622/files
  - new: https://git.openjdk.org/jdk/pull/17622/files/e3b346ff..e22c1f0a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17622&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17622&range=00-01

  Stats: 30 lines in 2 files changed: 14 ins; 14 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/17622.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17622/head:pull/17622

PR: https://git.openjdk.org/jdk/pull/17622