RFR: 8277531: Print actual default stacksize on Windows thread logging [v4]

[KIRIYAMA Takuya]

> I modified to log actual stack size on Windows by using `os::win32::default_stack_size()`.
> Could you please review this fix?

KIRIYAMA Takuya has updated the pull request incrementally with one additional commit since the last revision:

  8277531: Print actual default stacksize on Windows thread logging

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6495/files
  - new: https://git.openjdk.java.net/jdk/pull/6495/files/0bdc2fb6..5a95b65d

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6495&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6495&range=02-03

  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6495.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6495/head:pull/6495

PR: https://git.openjdk.java.net/jdk/pull/6495