2.5.30 released October 31, 1999

- defend1 and break_chain try harder to make a ko defense the last resort
- small_semeai_analyzer ignores strings with 2 liberties
- tweak in breakchain2 may yield a speedup
- bugfix in is_ko
- fourlib_depth++ in several places
- does_defend() slightly rewritten parallel to does_attack
- change_defense and change_attack adjust worm.codes
- minor changes to patterns.db (mostly comments)
- decidestring reports ko result
- show_dragons() tells about ko status
- README, TODO, INSTALL, and gnugo.6 revised
- bugfixes in the makefiles to allow compilation in a separate directory
- bugfix in conn.db to stop amalgamations over ko
- debug message removed from induce_secondary_move_reasons()
- retuned old style moves in the new move generation scheme