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 package require Tcl 8.5 in redis.tcl so it will show a clear error when the test suit is attempted to run under 8.4

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

make sure that cmpobj is in decoded form when sorting by ALPHA (this solves edge case from previous commit where (!sortby && alpha) == 1)

set refcount of string objects retrieved from zipmaps to 0, so we don't have to touch the refcount of the objects inside dicts