Use the new install script as make install target. Message about install script requiring root changed a bit to make it more evident.

when processing gossip packets make sure to also update the node bitmap when associating slots to nodes. Fixed simply using the appropriate helper function to add a slot.

redis-trib: initial working implementation of cluster rehashing, more work needed to make it more correct, more reliable.

Clear the importing status from the slot if a CLUSTER SETSLOT command permanently assigns the slot to the importing node.

redis-trib: initial slots allocation strategy, still to improve for better balancing when there are just a few slots to move.

redis-trib: minor refactoring creating a method to load the cluster information starting from a single node

Fixed command table for RESTORE to make it accepting keys only for the right slots when cluster is enabled.

Return errors if a write command is called inside a Lua script after a random command was called. See https://github.com/antirez/redis/issues/95 for more information.

Lua math.random and math.randomseed replaced with our own version based on redisSrand48(). Seed initialized to the same value at every EVAL/EVALSHA call.

libc neutral random function derived from a drand48() implementation added. Will be used to replace Lua's math.random implementation.

rioInitWithFile nad rioInitWithBuffer functions now take a rio structure pointer to avoid copying a structure to return value to the caller.

make sure to return just 1 for rio.c write when the target is a buffer, as we do when the target is a file.

comment on top of the _rio structure modified for correctness as actually fwrite/fread semantics is different in general, but was 0/1 in our old usage before rio.c as we always used 1 as number items, and the actual number of bytes to read as item length.

fixed a small bug that caused redis-cli to segfault when given single numeric parameter greater that zero.

Emit a log message when AOF fsync is still in progress but we are forced to write from the main thread since two seconds already elapsed.