RFR: JDK-8306883: Thread stacksize is reported with wrong units in os::create_thread logging [v2]

[Thomas Stuefe]

> Trivial fix to the display of the thread stack size when UL-logging thread attach.
> 
> Before:
> `[0.012s][info][os,thread] Thread attached (tid: 153734, pthread id: 139862746482432, stack: 0x00007f3455525000 - 0x00007f3455424000 (1052672k) ).`
> 
> Now:
> `[0.002s][info][os,thread] Thread attached (tid: 350868, pthread id: 140394443233024, stack: 0x00007fb020eae000 - 0x00007fb020dad000 (1028k) ).`

Thomas Stuefe has updated the pull request incrementally with one additional commit since the last revision:

  aleksey-is-nerdy

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/13665/files
  - new: https://git.openjdk.org/jdk/pull/13665/files/6638c5ca..82d461d9

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13665&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13665&range=00-01

  Stats: 4 lines in 4 files changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/13665.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13665/head:pull/13665

PR: https://git.openjdk.org/jdk/pull/13665