More redis.conf self-documentation. Now even queries that took exactly server.slow_log_slower_than are logged, as this is not exact but is more intuitive for people, and a value of 0 will force every query to be logged.

special encoding limits redefined, and all the config options for special encodings added in the example redis.conf file

added noeviction policy to redis maxmemory. ZSCORE removed from the list of commands that can't be called when we are low on memory, this command was added in the past for a stupid error.

multi bulk requests in redis-benchmark, default fsync policy changed to everysec, added a prefix character for DEBUG logs

support for named VM swap file. Fixed a few important interaction issues between the background saving processes and IO threads