[libvirt] (no subject)

Hi, I've made an improved set of ocaml bindings for the libvirt event mechanism which I'm now reasonably happy with. Improvements since my first submission: 1. it's possible to deregister callbacks with 'deregister_any' 2. the callback to ocaml now re-acquires the heap lock *before* creating and registering OCaml values with the GC: the previous patches got this wrong and bad things happened 3. it's possible to add and remove timer callbacks: this is used in the example to run Gc.compact() often, to check for problems 4. I removed the symbol detection for bindings present in libvirt 0.9.1 Let me know what you think! Thanks, Dave