[11u] Heads up: Change bundle name on macOS / OSX in 11.0.16

[Lindenmaier, Goetz]

Hi,

Bundles of the OpenJDK 11 macOS build currently
name the operating system "osx".  In 17, this has been adapted
to be "macos", the brand name used by Apple.

OpenJDK 11 will change to use "macos" starting with 11.0.16.
This streamlines the OpenJDK naming with jdk17, Oracle and
Apple.

Please be aware that you might need to adapt your code if you
automatically access OpenJDK 11 builds for macOS.
Examples for old and new bundle names:
jdk-11.0.16-internal+0_osx-x64_bin-slowdebug.tar.gz
jdk-11.0.16-internal+0_macos-x64_bin-slowdebug.tar.gz
The JBS issue covering this:
https://bugs.openjdk.java.net/browse/JDK-8266318 Switch to macos prefix for macOS bundles

Best regards,
Goetz