the file may accumulate the list of obsolete translations, which may
help to translate some changed entries and may be safely dropped out.
-* because I never install LilyPond, I (check-out buildscripts/set-lily.sh)
- made these links:
+* because I never install LilyPond, I made these links:
ln -s $LILYPOND_SOURCEDIR/po/out/nl.mo
$PREFIX/usr/share/locale/nl/LC_MESSAGES/lilypond.mo