RFR: JDK-8303549: [AIX] TestNativeStack.java is failing with exit value 1 [v2]

[Varada M]

> Stackoverflow exception has caused an exit value 1 when native thread is attaching as daemon. 
> On AIX the default stack for posix thread is 192 KB. For this particular test we run thread in pthread_create() which is defined in pthread library thus not following JVM thread creation routines. Hence we have to explicitly provide stack size. 
> 
> Reported Issue :[JDK-8303549]( https://bugs.openjdk.org/browse/JDK-8303549)

Varada M has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - stack size added
 - Merge remote-tracking branch 'upstream/master' into test_native_stack
 - Added stack size

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/14209/files
  - new: https://git.openjdk.org/jdk/pull/14209/files/9e1f65e3..5c30e3ff

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14209&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14209&range=00-01

  Stats: 21905 lines in 431 files changed: 17102 ins; 2103 del; 2700 mod
  Patch: https://git.openjdk.org/jdk/pull/14209.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14209/head:pull/14209

PR: https://git.openjdk.org/jdk/pull/14209