tomana's updates using oF 0.7.4

Completes a working version of the calibration and 2D rendering modules without using a separate window for the projector screen.

Uses openFrameworks 0.7.4 and therefore GLUT windows. A multi-window approach should probably use GLFW for windowing, as openFrameworks will move to it in 0.8 and oF will probably implement multi-window using GLFW in the future.