Release of Version 2.2.1

[Alan DeKok]

Stefan Winter wrote:
> I have also copy&pasted a full "step" execution from the moment
> virtual_servers_free is called. This should allow to see the sequence of
> events that made the SEGV happen.
...
> 2242                            next = loop->next;
> (gdb)
> 
> Program received signal SIGSEGV, Segmentation fault.
> modcallable_free (pc=pc at entry=0x7fffffffe418) at modcall.c:2242

  Well, that's it.  I've pushed a fix.

  Sorry for the delay.

  Alan DeKok.