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

[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)

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

Commit messages:
 - Added stack size

Changes: https://git.openjdk.org/jdk/pull/14209/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14209&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8303549
  Stats: 11 lines in 1 file changed: 10 ins; 0 del; 1 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