* scm/define-music-types.scm (music-descriptions): don't use

* scm/define-music-types.scm (music-descriptions): don't use
Music_wrapper type.

* lily/paper-column.cc (print): print moment too.

* scripts/mup2ly.py (cp_to_dir): remove 1.5.2 compat glue.
remove compatibility cruft.

* lily/parser.yy (score_body): \score can only begin with Music.

* lily/score-scheme.cc (LY_DEFINE): rename scorify to
make-score. Take music argument only. Move parser interaction to
Scheme.

* scm/lily-library.scm (scorify-music): new function.

* python/lilylib.py (datadir): remove 2.1 compat kludge.
(datadir): remove resource import.
(print_environment): remove get_bbox()
(cp_to_dir): remove pre 1.5.2 compat glue.