Merge branch 'master' of ssh://jomand@git.sv.gnu.org/srv/git/lilypond

* 'master' of ssh://jomand@git.sv.gnu.org/srv/git/lilypond:
  Small corrections to NR 1.8.1 "Writing Text"
  Misc proofreading and policy.
  Compile fix.
  Standardize introduciton of snippets.
  Remove old @cindex entries for markup commands.
  GDP: NR 2 Reorganisation: Ancient headings
  Fix comments from Neil, thanks!
  add \balloonLength{On,Off} similar to \textLengthOff