#1203 Removed casadi_primitive.i
#1203 Refactored sx.i
#1203 Removed sx.i, distributed content
#1203 Removed casadi_noncore.i
#1203 Removed casadi_primitive_tools.i, distributed content
#1203 Added classes to core.hpp
#1203 Removed casadi_function.i, function.i, distributed content
#1203 Refactored casadi_core.i
#1203 Refactored matrix.i
#1203 Refactored matrix.i (2)
#1203 Removed matrix.i, distributed content
#1203 Removed mx.i, distributed content