Merge pull request #73 from opengm/master

Multicut Python update
Merge pull request #74 from opengm/master

update from opengm:master
-mexample how to use external inference libraries within the OpenGM-CMake-project
Merge pull request #299 from joergkappes/master

example how to use external inference libraries within the OpenGM-CMake-project
python helper function that generates a second-order model on a 3d grid (volume).
removed linebreak in example
10x10x10 what number is that again? 100 or 1000
Merge pull request #300 from JensNRAD/3Dgrid

python helper function that generates a second-order model on a 3d grid ...
check for memory usage (beta)
test for memory usage class
add memory usage test
bugfixes for windows
load ans save Potts models in Matlab
load ans save Potts models in Matlab
Potts model
Potts model
add vigra option
 add implementation of LSA_TR methods
add test for LSA_TR
minor changes and adding LSA_TR to cmd-tool