Parallel version of <tt>readcn</tt>.  If <tt>incnfile = <i>fname</i></tt>,
each CPU reads the file named <tt><i>fname</i>.cpu00</tt>, <tt><i>fname</i>.cpu01</tt>,
&hellip;, where the integer is the value of  <tt>myDomain</tt>.

<p>
Effective only when MD++ is compiled for parallel runs, e.g. with 
<tt>SYS = mpicc</tt> or <tt>SYS = mpigpp</tt>.

