Squashed commit of the following:

commit 42c2595d40ceb6f65ec41574ce0af3c4facc9023
Author: Georgios Chinis <Georgios.Chinis@sophos.com>
Date:   Fri Feb 22 14:11:38 2013 +0100

    Update sentinel to use ssl

commit 0d007710473350e0e4e28d5dc20a8c6c1e4819a5
Author: Georgios Chinis <Georgios.Chinis@sophos.com>
Date:   Fri Feb 22 13:36:38 2013 +0100

    Update redisAsyncConnect to use ssl

commit 9c18cf0cabb385cf9eada7593e4a3965ef922d15
Author: Georgios Chinis <Georgios.Chinis@sophos.com>
Date:   Fri Feb 22 12:29:11 2013 +0100

    Update redisConnectNonBlock to use ssl