Usage: <tt>nsample = <i>NS</i> input = [ <i>nstart nend smin smax nmax</i> ] WalkonChain</tt>

<p>
Read in intermediate .cn files "inter####.cn" (in the current directory specified by
<tt>dirname</tt>), whose numbers run from <tt><i>nstart</i></tt> to <tt><i>nend</i></tt>, 
and compute the energy, total spin, and success rate.

<p>
The success rate is the probability of reaching state with most spins up in Monte Carlo
simulations starting from this configuration as the initical condition.  It is computed 
by calling <tt>ComputeSuccessRate</tt>.



