* lily/paper-book.cc (split_string): new function

* lily/paper-book.cc (split_string): new function
(output): output multiple formats, i.e. --format=ps,tex

* scm/output-ps.scm (output-scopes): dump variables directly.
(define-fonts): rewrite for new interface

* ps/lilyponddefs.ps: remove lilypondpaper redefinitions.

* lily/paper-outputter.cc (Paper_outputter): take format argument.

* lily/main.cc (parse_argv): don't set extension for output.

* lily/clef-engraver.cc (create_clef): remove
Staff_symbol_referencer::set_position() call.