do not throw exepction if transoprtationsolver might be not converged
update compilp: better problem handling, add hard timelimit (todo add this as parameter)
visitor injection for daoopt -> might need new download of daoopt code
allow commandline logging for more return-flags
reduce default tolarance for optimality
change precessions within Multicut
add converter to weighted UDAG
add new converter to cmakelist
Merge pull request #54 from opengm/RC-2.3

update from master
Merge branch 'RC-2.3' of https://github.com/joergkappes/opengm into RC-2.3
Merge pull request #211 from joergkappes/RC-2.3

Rc 2.3