* lily/include/midi-item.hh (class Midi_track): idem.

* lily/include/midi-item.hh (class Midi_track): idem.

* lily/include/source.hh (class Sources): idem.

* lily/include/performance.hh (class Performance): use vector
iso. Cons<>

* flower/include/cons.hh (class Cons): remove file.

* flower/include/flower-proto.hh: remove template cruft.

* lily/include/font-metric.hh: use size_t not vsize for indices.

* flower/include/flower-proto.hh (Module): remove std-vector.hh
from proto.

* lily/include/all-font-metrics.hh: use HAVE_PANGO_FT2

* flower/include/flower-proto.hh: remove outdated templates.