[gnugo-announce] GNU Go 3.1.25

[Daniel Bump]

GNU Go 3.1.25 is now available at http://www.gnu.org/software/gnugo/devel.html
or in the CVS. The release tag is rel-3-1-25.

There are relatively few changes this time. 

You can make a stronger engine by compiling with experimental influence
enabled, but it will be slower. The regressions were updated with the 
options experimental connections and alternate connections.

I added Mans Ullerstam, Arend Bayer and Trevor Morris to AUTHORS.

If you want to know what compile options were enabled in a
GNU Go binary you can run gnugo --options and it will tell
you that information.

influence_doc_1_25.1. Influence documentation. 
options_1_25.1. Command line option --options reports configure options. 
arend_1_25.3. Big influence patch. 
ettiquette_1_25.1a. Open in the polite corner. 
arend_1_25.2. Readconnect is less verbose. 
caution_1_25.1a. Generates moves when opponent tries to live in our territory. 
trevor_1_25.3 GTP tryko. 
dfa_unsort_1_25.1. DFA_SORT. 
trevor_1_25.2. Fastlib and pattern anchors. Supercedes trevor_1_25.1. 
bugfix_1_25.2. Stops a crash in atari_atari:6. 
owl_threats_1_25.1. Thrashing dragons. 
gunnar_1_25.1. Threat computation bugfix.
teun_1_25.1a. Floating point exception. 
arend_1_25.1a. Influential patch. 
bugfix_1_25.1. Prevents a crash when owl threats are enabled. 

- updated AUTHORS
- command line option --options reports configure options
- verbose reduced in readconnect.
- do_genmove tries harder to restrain thrashing dragons.
- DFA_SORT set to 0.
- new gtp tryko.
- new function fastlib() helper for approxlib family.
- a pattern can now force the anchor point.
- matchpat can be run forcing anchor to be in the goal.
- simplification of UPDATE_SAVED_KO_RESULT
- reduce overhead in non-variadic macro TRACE definitions
- reduce MAXSTACK
- EXPERIMENTAL_READING code much more interesting.
- moved most of EXPERIMENTAL_READING code out of do_attack.
- [ox]lib request only up to MAX_LIBERTIES liberties.
- bugfix in reevaluate_ko_threats
- floating point exceptions stopped in readconnect.c
- experimental influence: yet another new_value_territory revision
- experimental influence: fixed followup values really taken down (shapes.c)
- experimental influence: pattern tuning
- experimental influence: follow-up specific constraints for B patterns
- experimental influence: new_value_territory revised (center correction)
- experimental influence: most fixed follow-up values taken down
- experimental influence: tuning, joseki values increased, some bugs fixed
- experimental_influence ignored for escape influence
- influential doc revision
- edge_double_sente_helper is now autohelper
- owl threat loop broken out
- new global thrashing_dragon

Dan