Fixed spelling error in documentation

Make `ResponseTimeout` a separate configuration option to `SyncTimeout`; expose the `origin` on failure messages

Test case for issue #182

Add ThreadPool statistics to Timeout message to help debug IOCP issues

Merge branch 'master' of https://github.com/shiweichuan/StackExchange.Redis into shiweichuan-master (taken back to master - major merge pain)

Conflicts:
	StackExchange.Redis/StackExchange/Redis/RedisDatabase.cs

Issue #111: HashSet with RedisValue.EmptyString do not work as ""

A fix for https://github.com/StackExchange/StackExchange.Redis/issues/20

fix keyExpiry's DateTime convert to Utc

Named script parameters squashed

provide a way of overriding the task factory which se.redis will use #159

slave-of should help us out by a: not preserving a known-bad "master" value, and b: telling anyone listening about the pending change

Prevent EVAL to SCRIPT conversion if it is not supported 

Unhandled exception in callback when connection is disposed

Adding an environ var (SERedis_ClientCertStorageFlags) for configuring which cert store to check.

Added ability to write to a non-readonly slave