[jdk11u-dev] RFR: 8227389: Remove unsupported xlc16 compile options on aix [v2]

[Tyler Steele]

> #993 
> 
> Removes unsupported compiler options `-qlanglvl=noredefmac` and `-qlanglvl=c99vla` causing build warnings with xlc 16.1.

Tyler Steele has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains one commit:

  Backport bb9615654865fe35562e3ae643e9f286cbd7047a

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

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/999/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=999&range=01
  Stats: 2 lines in 1 file changed: 0 ins; 1 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/999.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/999/head:pull/999

PR: https://git.openjdk.java.net/jdk11u-dev/pull/999