EAFNOSUPPORT should be mapped to LCB_CONNECT_EFAIL on windows

Change-Id: Iab0cc799aef8cda3e164c9f692ab899baa5d26be
Reviewed-on: http://review.couchbase.org/25170
Tested-by: Sergey Avseyev <sergey.avseyev@gmail.com>
Reviewed-by: Trond Norbye <trond.norbye@gmail.com>