The following patch fixes gc-mem.c in kaffevm for 0.9.2 so that it

a) honors the -mx flag and

b) tells you when it actually runs out of memory (without that it would just
   hang when you ran out of virtual memory - which could be caused by having
   a datalimit set, for instance. - That happened to me, so make sure you
   ulimit so that you can take advantage of your 64M + swap)


	- Godmar

46,47c46,47
< size_t gc_heap_allocation_size;
< size_t gc_heap_limit;
---
> size_t gc_heap_allocation_size = ALLOC_HEAPSIZE;
> size_t gc_heap_limit = MAX_HEAPSIZE;
69,70d68
<       gc_heap_allocation_size = ALLOC_HEAPSIZE;
<       gc_heap_limit = MAX_HEAPSIZE;
649c647,650
<               ptr = sbrk(size);
---
>               if ((ptr = sbrk(size)) == -1) {
>                       ptr = 0;
>                       break;
>               }