Jitsi work in progress

I've unbundled a bunch of dependencies for jitsi. The packages are still in rough shape (need to double check licence etc...)
Libjitsi compiles, however I haven't looked at the C code yet, so that will need to be tackled at some point.
Jitsi doesn't compile yet, new dependencies keep popping up, it's endless! I'll try to keep on working, but wanted to submit a pull request of what I've done so far in case you were interested in helping out.