Created EtcsBrakingCurveBuilder_NT to allow the class to calculate braking curves forwards, refactored the calculation of a segment from a single point in NT (still only backwards)
Refactoring complete in EtcsBrakingCurveBuilder_NT and added a method for the full deceleration curve for a target. Modified the MRSP in the test to be a little more complex.
MODIFIED The new BrakingCurveBuilder appears to work
Renamed BrakingCurveBuilder to _Obsolete, and renamed _NT to just BrakingCurveBuilder
Bug in new BrakingCurveBuilder's debugging counter fixed