* lily/include/translator.icc

* lily/include/translator.icc
(IMPLEMENT_FETCH_PRECOMPUTABLE_METHODS): directly jump into
Translator methods, without _static helper.

* lily/grob-smob.cc (derived_mark): rename from
do_derived_mark(). Don't return SCM.

* lily/item.cc (handle_prebroken_dependencies): use a vector of 3
booleans for break-visibility.

* lily/include/translator.icc: new file.

* lily/include/translator.hh (class Translator): rename
process_acknowledged_grobs() to process_acknowledged() and move to
Translator.

* lily/note-head.cc (internal_print): only call
glyph-name-procedure if  style != default. 3 %  speed increase (wtk2-fugue1).