2.7.29 released February 11, 2000

- tuning of barriers.db, endgame.db, and patterns.db
- sprintf replaced by vsprintf in gg_snprintf
- spelling corrections
- TODO revised
- unreachable code in hashdata_init() commented out
- UNUSED and ON_BOARD macros moved to liberty.h
- special_rescue() made more general
- calls to special_rescue() also in defend3()