various cleanups and minor fixes

Test: csvdump now scans all DBs.

Test: be more patient waiting for servers to exit.

This should likely fix a false positive when running with the --valgrind
option.

Add --track-origins=yes to valgrind

Cluster test: also write from Lua script in resharding test.

Add quicklist implementation

This replaces individual ziplist vs. linkedlist representations
for Redis list operations.

Big thanks for all the reviews and feedback from everybody in
https://github.

Add quicklist implementation

This replaces individual ziplist vs. linkedlist representations
for Redis list operations.

Big thanks for all the reviews and feedback from everybody in
https://github.com/antirez/redis/pull/2143

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Test: wait for actual startup in start_server.

start_server now uses return value from Tcl exec to get the server pid,
however this introduces errors that depend from timing: a lot of the
testing co

Test: wait for actual startup in start_server.

start_server now uses return value from Tcl exec to get the server pid,
however this introduces errors that depend from timing: a lot of the
testing code base assumed the server to be actually up and running when
server_start returns.

So the old code that waits to see the pid in the log file was restored.

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Test: try to cleanup still running Redis instances on exit.

It's hard to run the Redis test continuously if it leaks processes on
exceptions / errors.

Remove trailing spaces from tests

Fix spelling in some test cases

Stop tests from leaving a black background

Uses ANSI "default background" color code after closing tests
so any non-black terminals don't remain polluted.

Fixes #1649
Closes #1912

Test: AOF rewrite during write load.

Test: find_available_port: check that cluster port is free as well.

The function will only return ports that have also port+10000 free, so
that Redis Cluster instances can be executed at the returne

Test: find_available_port: check that cluster port is free as well.

The function will only return ports that have also port+10000 free, so
that Redis Cluster instances can be executed at the returned port.

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Test: Tcl client initial support for automatic reconnection.

Test: tcl client, unset deferred var on close.

Fix test framework to detect proper server PID

Previously the PID format was:
[PID] Timestamp

But it recently changed to:
PID:X Timestamp

The tcl testing framework was grabbing the PID from \[\d+\

Fix test framework to detect proper server PID

Previously the PID format was:
[PID] Timestamp

But it recently changed to:
PID:X Timestamp

The tcl testing framework was grabbing the PID from \[\d+\], but
that's not valid anymore.

Now we grab the pid from "PID: <PID>" in the part of Redis startup
output to the right of the ASCII logo.

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cluster.tcl: fix redis links leak in refresh_nodes_map.

cluster.tcl: saner error handling.

Better handling of connection errors in order to update the table and
recovery, populate the startup nodes table after fetching the list of
nodes.

More work to do

cluster.tcl: saner error handling.

Better handling of connection errors in order to update the table and
recovery, populate the startup nodes table after fetching the list of
nodes.

More work to do about it, it is still not as reliable as
redis-rb-cluster implementation which is the minimal reference
implementation for Redis Cluster clients.

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redis.tcl: return I/O error message when peer closes connection.

Test: handle new osx 'leaks' error.

Sometimes the process is still there but no longer in a state that can
be checked (after being killed). This used to happen after a call to
SHUTDOWN NOSAVE in the

Test: handle new osx 'leaks' error.

Sometimes the process is still there but no longer in a state that can
be checked (after being killed). This used to happen after a call to
SHUTDOWN NOSAVE in the scripting unit, causing a false positive.

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Cluster: Tcl cluster client: handle MOVED/ASK.

Cluster: Tcl cluster client: slots-nodes map and close method.

Now the client is able to actually run commands in a Redis Cluster
assuming the slots->nodes map is stable.

Cluster: Tcl cluster client: build nodes representation.

Cluster: Tcl cluster client: get nodes description.

Cluster: Tcl cluster client key -> hashslot.