Partial revert of "FLOW: Update Turtle3D and supporting code to properly track the" until I can get the math right.
Partial revert of "FLOW: Update Turtle3D and supporting code to properly
track the" until I can get the math right.

jacksonic/vjlofvhjfgm,TanayParikh/foam2,TanayParikh/foam2,jacksonic/vjlofvhjfgm,foam-framework/foam2,jacksonic/vjlofvhjfgm,TanayParikh/foam2,foam-framework/foam2,foam-framework/foam2,foam-framework/foam2,TanayParikh/foam2,foam-framework/foam2