powerpc (ppc) arch powering down

This architecture has been removed and will no longer be supported. We lost our buildserver for it and no longer

possess the means to support it, as no developers are left to care for it as well. So, powerpc is being powered down.

If you possess such hardware, we are sorry, but there is no other choice for us. x86/x86_64 support will continue to be

supported indefinitely, as they are much easier to support. Please join us there if you can.