CLUSTER ADDSLOTRANGE & DELSLOTRANGE commands

CLUSTER ADDSLOTRANGE 0 5
is equalient for CLUSTER ADDSLOTS 0 1 2 3 4 5

CLUSTER ADDSLOTRANGE <from> <to>
CLUSTER DELSLOTRANGE <from> <to>
Reconnect redis-cli when cluster return "moved"

if redis works in cluster-mode and redis-cli was run with argv, reconnect if needs.
example:
./redis-cli set foo bar

if return is MOVED redis-cli just do nothing.
[=]