GNU Go 3.1.3 released September 6, 2001

This includes the following patches:

inge_1_3.1. Don't calculate incremental data at each move while loading an sgf file. 
metamachine_1_3.1. Adds the gtp engine metamachine in interface/gtp_examples.
gunnar_1_3.1. New attack pattern and regression. 
gunnar_1_3.2. Obsolete sgf_dump removed. 
gunnar_1_3.3. Replacement value code revised, tuning. 
gunnar_1_3.4. Bugfix in atari_atari. 
dublin_fix3.2. Fixes an error in the Dublin game with GoAhead.

I forgot to update regressions/BREAKAGE but it does pretty well:

./regress.sh . endgame.tst
211 unexpected FAIL: Correct 'A5', got 'O2'
401 unexpected PASS!
./regress.sh . neurogo.tst
3 unexpected PASS!
15 unexpected PASS!
./regress.sh . rosebud.tst
1 unexpected PASS!
./regress.sh . golife.tst
7 unexpected FAIL: Correct 'F3', got 'E4'
./regress.sh . viking.tst
3 unexpected FAIL: Correct 'M15|B7', got 'P18'
./regress.sh . ego.tst
3 unexpected PASS!
4 unexpected PASS!
./regress.sh . nicklas1.tst
1206 unexpected FAIL: Correct 'C15', got 'F18'
./regress.sh . strategy3.tst
160 unexpected PASS!
170 unexpected PASS!
171 unexpected PASS!
172 unexpected PASS!
174 unexpected PASS!

- bugfix in the atari_atari code
- obsolete sgf_dump facilities removed
- remove_string removed from gnugo.h
- add_replacement_move() in move_reasons.c revised
- in value_move_reasons() ko threats are affected by shape values
- tuning
- don't call new_position for every stone when playing out an SGF tree.
- new gtp engine metamachine in interface/gtp_examples
- new gtp command query_boardsize