RFR: JDK-8319516 - Native library suffix impact on the library loading in AIX- Java Class Loader [v5]

[Suchismith Roy]

> Allow support for both .a and .so files in AIX.
> If .so file is not found, allow fallback to .a extension.
> JBS Issue: [JDK-8319516](https://bugs.openjdk.org/browse/JDK-8319516)

Suchismith Roy has updated the pull request incrementally with four additional commits since the last revision:

 - coding style
 - set false
 - restore fil
 -  remove member check code

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Changes:
  - all: https://git.openjdk.org/jdk/pull/17945/files
  - new: https://git.openjdk.org/jdk/pull/17945/files/d361656c..212a8cf9

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17945&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17945&range=03-04

  Stats: 16 lines in 2 files changed: 1 ins; 13 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/17945.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17945/head:pull/17945

PR: https://git.openjdk.org/jdk/pull/17945