Patch in:
commit c6dc75cc271ca8d3cb2615386f8ca24685d54d7b
Author: Megh Bhatt <meghb@juniper.net>
Date:   Thu Dec 5 10:20:05 2013 -0800

    Remove wait_msgq from SandeshWriter since TcpSession Send already
    buffers the unsent data. This helps simplify the SandeshSession/
    SandeshWriter send code. SendInternal updates the ready_to_send
    flag based on the TcpSession Send. In WriteReady callback, set
    ready_to_send to true and kickstart the send queue processing.