Rc2.1

* include matlab interface into the release branch (implemented by Christopher Pommrenke)
* changes in the caller architecture in order to enable the use from other languages e.g. Matlab (implemented by Christopher Pommrenke)

-> if You have separate callers this have to be modified, see other caller for example. 
-> documentation in the manual will follow soon 

* fix problems with DualDecomposition
* remove printf in TRWS