Cleaning the CN2 solver
Working on the CN2 solver for the (partial) condensing case.
Added MEX compilation script for the qpDUNES based solvers.
Added a possibility for external factorization of the Hessian in CN3...

... based OCP solver
Working on the MHE expansion in the CN2 solver
Added makefile for the qpDUNES based solver
default print level of qpDUNES set to 0
Fixed makefiles for qpDUENS based OCP solvers
Merge branch 'master' of github.com:acado/acado

Conflicts:
	src/code_generation/export_gauss_newton_cn2.cpp
CMake typos
merge from Milan's master
use of timer tic/toc in integrate MEX function
update of the templates in ACADO's MATLAB interface
removed weird behaviour with acado.Equals in DifferentialEquation for MATLAB interface to C++ translation
discovered a strange bug to be fixed in model_data class