* lily/hairpin.cc (print): check columns of bounds, not bounds themselves.

* lily/hairpin.cc (print): check columns of bounds, not bounds themselves.
(print): robustify bound-padding lookup.

* scripts/lilypond-book.py (Compile_error.process_include): catch
Compile_error exception, and remove output .texi.

* lily/parser.yy (Music_list): add error-found to music with errors.