MacOS distribution no longer supported

[bengtmartensson]

The current project is written in Java, and the only JNI library (excluding DevSlashLirc, which is only available on Linux) is NRJavaSerial, which maintains its native components itself. So, from that point of view, MacOS is trivially supported. However, since a few years there is also a separate MacOS distro as MacOS dmg, containing an embedded Java (AdoptOpenJDK version 11).

Java v. 11 is many years old, and the current LTS version is 21. The other IrScrutinizer versions are planned to be updated. Also, there is at least one quirk, #448, with that Java version.

The Mac I have access to is an "early 2009" MacMini, running 10.11.6 (El Capitan, the final version supported on that hardware). Later Java versions do not appear to run on that OS ("Segmentation fault:11").

I have decided not to support the MacOS distro any more. Not only because I have to get new hardware, but it does not appear to be a very valuable investment of my time. I will still build and distribute them, but there may be issues (like #448).

Comments welcome!