add sanity check to zunionInterBlockClientOnSwappedKeys, as the number of keys used is provided as argument to the function

make prototype of custom function to preload keys from the vm match the prototype of waitForMultipleSwappedKeys

AOF writes are now accumulated into a buffer and flushed into disk just before re-entering the event loop. A lot less writes but still this guarantees that AOF is written before the client gets a positive reply about a write operation, as no reply is trasnmitted before re-entering into the event loop.

AOF is now rewritten on slave after SYNC with master. Thanks to @_km for finding this bug and any others'

Pub/Sub API change: now messages received via pattern matching have a different message type and an additional field representing the original pattern the message matched

Now in redis.conf it is possible to specify units where appropriate instead of amounts of bytes, like 2Gi or 4M and so forth

This reverts commit 566c3c7a.

This reverts commit 122c0498.

This reverts commit 18871421.

Fix for MULTI/EXEC and Replication/AOF: now the block is correctly sent as MULTI/..writing operations../EXEC. Ok for slaves but more work needed for the AOF as it should be a write-all-or-nothing business

Added support for Guru Mediation, and raising a guru mediation if refCount <= 0 but decrRefCount is called against such an object