lilypond-book on windows

[Graham Percival]

ok, I'm really confused with all the reports about what happens on
all sorts of different lilypond versions.

Please test this version:
http://lilypond.org/~graham/lilypond-2.15.25-1.mingw.exe
add it to your PATH, then me exactly what you see when you try to
call lilypond-book.  I have various suspicions about what's
happening, you have various suspicions, everybody has suspicions,
but I want to see exactly what happens with that version.

Unfortunately for various reasons I can only work on this in the
early mornings UK time, so only expect one version per day -- but
there *will* be one version per day, until this is resolved.

- Graham