* lily/program-option.cc: rename from scm-option.cc

* lily/program-option.cc: rename from scm-option.cc

* lily/scm-option.cc (LY_DEFINE): handle no-foobar option setting.
(get_help_string): Print pretty help string.

* scripts/lilypond-book.py (PREAMBLE_LY): add no-point-and-click
to snippet preamble.

* lily/scm-option.cc: remove command-line-settings option. Fold
all command-line options plus default settings in a generic
interface.

* flower/getopt-long.cc (table_string): indent 2nd lines of help
texts too.