Adds Morgan SCARA solution to smoothieware
Will be adaptable to other SCARA systems

	modified:   src/modules/robot/Robot.cpp
	new file:   src/modules/robot/arm_solutions/MorganSCARASolution.cpp
	new file:   src/modules/robot/arm_solutions/MorganSCARASolution.h
Merge pull request #449 from RepRapMorgan/addSCARA

Adds Morgan SCARA solution to smoothieware