Fix an issue where SetFastLoopbackOption throws throws a SocketException instead of a PlatformNotSupportedException on Win 2008 R2

Fix an issue where SetFastLoopbackOption throws throws a SocketException instead of a PlatformNotSupportedException on Win 2008 R2.

Fix an issue where SetFastLoopbackOption() throws PlatformNotSupportedException on non-Windows platforms.

GetTypeCode() extension method bug fix

Fix an issue where SetFastLoopbackOption() throws PlatformNotSupportedException on non-Windows platrorms.

Merge branch 'jeremymeng-netcore' of github.com:StackExchange/StackExchange.Redis into jeremymeng-netcore

small fixes

Add resilience to non ideal cluster topology in CLUSTER NODES response parsing

fix for issue https://github.com/StackExchange/StackExchange.Redis/is…

Ensure cluster configuration is upto-date before returning the connection multiplexer

Add ConvertHelper.ConvertAll, which uses Array.ConvertAll() for Non-dnx, and add implementation for dnx.

To replicate a bad state, create a simple cluster with 3 shards across 9 nodes. Kill 3 slaves. Clear their state. Restart the 3 nodes. Start adding them back to the cluster 1 by one.