Allow OpenJFX to be built on unknown architectures

[John Neffenger]

On 3/30/23 11:17 AM, Glavo wrote:
> I compiled OpenJFX for RISC-V and MIPS64el platforms with reference to 
> your patch, thereby porting our JavaFX applications to these platforms, 
> and it worked well.

A better patch, then, would be to remove the platform test entirely so 
that there are no unsupported build architectures. In other words, 
remove this failure:

   fail("Unknown and unsupported build architecture: $OS_ARCH")

My current patch is too conservative and just extends the list of 
supported architectures. I'll keep that in mind when I create the pull 
request (unless anyone else beats me to it).

allow-armhf-i386-ppc64el-s390x.patch
https://github.com/jgneff/openjfx/blob/edge/snap/local/allow-armhf-i386-ppc64el-s390x.patch

Thanks,
John