* input/test/dpncnt.ly: New file.

* input/test/dpncnt.ly: New file.

* lily/my-lily-lexer.cc: Add chordnames keyword.

* lily/parser.yy (chordnames_block): Parse chord name exception
lists, see input/test/dpncnt.ly.

* scm/chord-name.scm (set-double-plus-new-chord-name-style): New
function.

* scm/lily.scm (filter-out-list): Bugfix: filter rest using
filter-out too.

* lily/pitch.cc (ly_pitch_transpose): Scheme name now
ly:pitch-transpose (was ly:transpose-pitch), in conformance with
pitch functions (except for ly:make-pitch, but that's apparently
some sort of scheme naming standard?).

* scm/lily.scm (!=): define-public.

* scm/new-markup.scm (make-markup-maker): define-public make-markups.