s edges to connect those components together in a path. For example, if
a graph contains three connected components <i>A</i>, <i>B</i>, and <i>C</i>,
<tt>make_connected</tt> will add two edges. The two edges added might consist
of one connecting a vertex in <i>A</i> with a vertex in <i>B</i> and one
connecting a vertex in <i>B</i> with a vertex in <i>C</i>.
<p>
The default behavior of <tt>make_connected</tt> is to modify the graph
<tt>g</tt> by calling <tt>add_edge(u,v,g)</tt> for every pair of vertices
<i>