[libqb] Moving libqb to https://github.com/clusterlabs/

[Angus Salkeld]

Hi

I am moving libqb to a new home on github so the maintainership can
be better shared with David Vossel.

I hope to do that today.

I'll try update all the appropriate links. I might also clone a
version so there is one still in asalked/libqb.git but with a link
back to the master at clusterlabs.

Regards
Angus