Merge pull request #15 from opengm/master

from master to my fork
added SelfFusionInference (as FusionBp)
fixed loc bit rotting bug
improved fusion mover
self fusion rocks
improved self-fusion, added dd-sg-dp to self fuison python
refactored self fusion,added gibbs to pySelfFusion
added missing links in test-self-fusion
added missing links in test-self-fusion
fix strange bug
added timing visitor
first benchmark impl
minor stuff
wip
wip
improved LOC a bit
wip
wip
wip
wip pbp