lilypond-book eps is too big for letterpaper

[Graham Percival]

The eps produced by lilypond-book is too big for a letterpaper.  The
final line (^"invisible") is not visible at all, while the ^"margin" 
line
is printed in the bottom margin.


%  the "invisible" line is not visible in 2.6.0+  (cvs, including
%  Mats' tempfile fix)
\documentclass[letterpaper]{article}
\usepackage{graphics}
\begin{document}

\begin{lilypond}
\book {
\header{ title = "Foo" }
\score { {
\repeat unfold 8 {c'4 c' c' c' } \break
\repeat unfold 8 {c'4 c' c' c' } \break
\repeat unfold 8 {c'4 c' c' c' } \break
\repeat unfold 8 {c'4 c' c' c' } \break
\repeat unfold 4 {d''4^"margin" d'' d'' d'' } \break
\repeat unfold 4 {e''4^"invisible!" e'' e'' e'' } \break
}}}
\end{lilypond}

\end{document}