Allows to disable default signal handler for current Af-Arch application.
By default, all applications using Af-Arch, that is, those linked to AfDal lib have a default signal handler for the segmentation fault which allows programmer to show the current stack.
But this can be a problem if you don't like this behaviour.
Another example of this is that AfArch# binding disable this signal handler because the .NET platform have its own segmentation fault exception handling.
This function must be called before afdal_init to have effect.