Raw output mode is selected by default when STDOUT is not a tty. For
ttys, raw output can be forced using the option "--raw".

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

Original report and fix:
http://code.google.com/p/redis/issues/detail?id=404

SUBSTR is renamed to GETRANGE to have better consistency between command
names (with SETRANGE as its dual). GETRANGE is still aliased as SUBSTR.

previouse INCR implementation restored, was actually faster for some reson not fully clear at the moment