N-body bench

[bearophile]

If someone if willing to test LDC2 with a known benchmark, 
there's this one:

http://benchmarksgame.alioth.debian.org/u32/performance.php?test=nbody
A reformatted C++11 version good as start point for a D 
translation:
http://codepad.org/4mOHW0fz

Bye,
bearophile