Unoptimized code for pure gauge lattice calculation.
For people who are completely new to LQCD, consult the following:
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T.C. Yu, LQM for Novices (http://web.mit.edu/ytc/www/806.pdf)
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G.P. Lepage, LQCD for Novices (http://arxiv.org/abs/hep-lat/0506036)