added R1R6 functions

VirtualRobot/CMakeLists.txt

VirtualRobot/math/AbstractFunctionR1Ori.cpp

VirtualRobot/math/AbstractFunctionR1Ori.h

VirtualRobot/math/AbstractFunctionR1R2.h

VirtualRobot/math/AbstractFunctionR1R6.cpp

VirtualRobot/math/AbstractFunctionR1R6.h

VirtualRobot/math/CompositeFunctionR1R6.cpp

VirtualRobot/math/CompositeFunctionR1R6.h

VirtualRobot/math/Helpers.cpp

VirtualRobot/math/Helpers.h

VirtualRobot/math/Line.cpp

VirtualRobot/math/Line.h

VirtualRobot/math/LinearInterpolatedOrientation.cpp

VirtualRobot/math/LinearInterpolatedOrientation.h

VirtualRobot/math/MathForwardDefinitions.h

VirtualRobot/math/SimpleAbstractFunctionR1Ori.cpp

VirtualRobot/math/SimpleAbstractFunctionR1Ori.h

VirtualRobot/math/SimpleAbstractFunctionR1R6.cpp

VirtualRobot/math/SimpleAbstractFunctionR1R6.h