2.7.20 released January 16, 2000

- removed unused file utils/getdate.c from distribution
- pattern Eye2 taken out from conn.db as workaround to a bug
- only victims with attack code 1 or 2 are considered lunch
- separation of interface into a public and a private part; liberty.h
  split into gnugo.h for external interface and liberty.h for internal
  interface
- dragon_status() renamed to compute_dragon_status()
- new function dragon_status() hiding dragon_data struct
- default cached function is only attack()
- new function is_worm_origin()
- new function confirm_safety()
- update the files getopt.c getopt1.c and getopt.h in utils/ to glibc-2.1.2
- add a file README in the utils directory explaining where the getopt
  files come from.
- make utils the first subdirectory to compile
- link in utils/libutils.a when linking mkpat.c