2.7.112 released June 5, 2000

- optimizations of false_margin()
- safe_move() no longer called from make_domains() if mouse code enabled
- call to modify_eye_spaces1() from make_domains() disabled if mouse code
  enabled 
- bugfix in attack2()
- bugfix in break_chain2()
- duplicate comment block removed from reading.c
- new files incident169.sgf, incident246.sgf, incident91.sgf, and
  reading01.sgf in regression/games
- regression/games/life_and_death/ld11.sgf slightly revised
- new mouse and reading test cases