Ensure tune graphic is confined to a single page.

Set a maximum height for the graphic of 0.9 text area as well as the current
target width of the text width. And also keep the aspect ratio. So if the
height is small enough, you get full width. Otherwise the graphic is
shrunk enough to keep it all on one page.

Perhaps one can then go back and edit the tune to fit it into fewer
lines.

makeBooke.sh

@@ -46,7 +46,7 @@ find $booke -name "*.abc" | sort |
         name=`basename $filename .abc`
         echo -E "\begin{center}" >> $builddir/$output
         echo -E "\phantomsection" >> $builddir/$output
-        echo -E "\hypertarget{$name}{\includegraphics[width=\textwidth]{$graphicsdir/$name}}" >> $builddir/$output
+        echo -E "\hypertarget{$name}{\includegraphics[width=\textwidth,height=0.9\textheight,keepaspectratio]{$graphicsdir/$name}}" >> $builddir/$output
         echo -E "\addcontentsline{toc}{subsection}{$title}" >> $builddir/$output
         echo -E "\end{center}" >> $builddir/$output
     done