* Documentation/user/lilypond.tely:

* Documentation/user/lilypond.tely:
* Documentation/user/lilypond-book.itely: Fix names of lilypond
and lilypond-book nodes, so that `info lilypond' visits the manual
at top level, and `info lilypond-book' visits the lilypond-book
section.

* Documentation/user/GNUmakefile (local-install-info): Fix rules
and packager messages.