Faster normalXAngle --> faster sin,cos,tan

Fragment of a discussion from User talk:Rednaxela/FastTrig
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Just a thought, but why not incorporate the faster normalRelativeAngle and normalAbsoluteAngle into the codebase of Robocode. That way everybody profits from it in the future when a newer version than 1.8.1.0 is standard.

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Personally, I wouldn't have any issues with it, but the fact that using a * instead of / probably loses a few ULPS and I'm not sure that is what we want for inside of the game engine. It is still faster than the standard method even using / , but by doing the - in a separate operation there is probably some ULPS loss there as well.

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