2.7.82 released April 30, 2000

- new file engine/interface.c included for real this time
- removed types SGFNodeP and SGFPropertyP
- play_solo() and play_gmp() now plays on a Position.
- get_moveXY moved from play_solo.c to sgf_utils.c
- minor cleanup in a number of places
- main.h moved from engine/ to interface/