Fix 1825: Convert-ly shall also print output if no replacement was done (issue 4961059)

[pkx166h]

sses make and reg tests and I ran a make doc too (seemed relevant) and
it failed

--snip--

tal error: failed files: "78/lily-63af708e.ly"
fatal error: Children (3) exited with errors.
command failed: /home/jlowe/lilypond-git/build/out/bin/lilypond
-dbackend=eps --formats=ps,png,pdf -djob-count=7 -dinclude-eps-fonts
-dgs-load-fonts --header=doctitle --header=doctitlecs
--header=doctitlede --header=doctitlees --header=doctitlefr
--header=doctitlehu --header=doctitleit --header=doctitleja
--header=doctitlenl --header=doctitlezh --header=texidoc
--header=texidoccs --header=texidocde --header=texidoces
--header=texidocfr --header=texidochu --header=texidocit
--header=texidocja --header=texidocnl --header=texidoczh
-dcheck-internal-types -ddump-signatures -danti-alias-factor=2 -I
"/home/jlowe/lilypond-git/build/out/lybook-db"  -I
"/home/jlowe/lilypond-git/build/Documentation"  -I
"/home/jlowe/lilypond-git/Documentation"  -I
"/home/jlowe/lilypond-git/build/Documentation/out-www"  -I
"/home/jlowe/lilypond-git/input"  -I
"/home/jlowe/lilypond-git/Documentation"  -I
"/home/jlowe/lilypond-git/Documentation/snippets"  -I
"/home/jlowe/lilypond-git/input/regression"  -I
"/home/jlowe/lilypond-git/Documentation/included"  -I
"/home/jlowe/lilypond-git/build/mf/out"  -I
"/home/jlowe/lilypond-git/build/mf/out"  -I
"/home/jlowe/lilypond-git/Documentation/pictures"  -I
"/home/jlowe/lilypond-git/build/Documentation/pictures/out-www"
--formats=eps  --verbose  -deps-box-padding=3.000000  -dread-file-list
-dno-strip-output-dir
"/home/jlowe/lilypond-git/build/out/lybook-db/snippet-names--1067344515.ly"
Child returned 1
make[2]: *** [out-www/notation.texi] Error 1
rm out-www/weblinks.itexi
make[2]: Leaving directory
`/home/jlowe/lilypond-git/build/Documentation'
make[1]: *** [WWW-1] Error 2
make[1]: Leaving directory `/home/jlowe/lilypond-git/build'
make: *** [doc-stage-1] Error 2
address@hidden:~/lilypond-git/build$

--snip--

I have attached the offending ly file on

http://code.google.com/p/lilypond/issues/detail?id=1825#c3

Hope this is useful.


http://codereview.appspot.com/4961059/