Ryzom

Much has been done already, because MacOSX is based on the Unix BSD flavor, too. I changed the backtrace() handling, though, because at least for FreeBSD there exists a library to emulate backtrace() and backtrace_symbols(). Apple offers a library or has it included into their C library as well, but I can't check that right now.

Aside of that the change to the CMake file isn't idiot proof, yet, i.e. someone may have an execinfo.h somewhere installed, but lacks the actual implementation. Means, it should be checked if backtrace() is either implemented in some kind of library or part of the default (C-) library, otherwise the feature should get disabled. Maybe we can add a user config for this kind of stuff, too, for systems where someone wants to add a self-made libexecinfo.

GTK was faulty, which I blame on either configuration messup or a related problem, will get back to that. Secondly, I stumbled over a problem with malloc.h in one of the Qt based tool applications (BSDs don't use malloc.h, they want stdlib.h instead).

Anyway, Snowballs runs, without sound, though, there were some unimplemented methods it seems, but I'm not sure what to blame there (haven't poked that problem, yet).