* lily/parser.yy: get rid off < > in markups by treating { } as

* lily/parser.yy: get rid off < > in markups by treating { } as
real lists.

* lily/lexer.ll: remove < > from markup lexer mode.

* scm/new-markup.scm (map-markup-command-list): helper function
used in parser.yy to map markup commands on a markup list.

* scripts/convert-ly.py (conv): add rule for converting
\markup < > to \markup { }

* ly/titling-init.ly:
* input/test/coriolan-margin.ly:
* input/regression/new-markup-syntax.ly:
* input/regression/new-markup-scheme.ly:
* input/regression/multi-measure-rest-text.ly:
* input/regression/markup-stack.ly:
* input/regression/markup-score.ly:
* input/regression/instrument-name-markup.ly:
* input/mutopia/W.A.Mozart/mozart-hrn-3.ly:
* input/mutopia/R.Schumann/romanze-op28-2.ly:
* input/mutopia/J.S.Bach/wtk1-fugue2.ly:
* input/wilhelmus.ly:
* Documentation/user/notation.itely:
* Documentation/user/music-glossary.tely:
* Documentation/user/changing-defaults.itely: change < > to { } in
markups