ALLJOYN-1794 Increase number of IODispatch timer threads to 16.

Change-Id: I371b669c1725d95b309765e13ca928313671d0ba
ALLJOYN-1853 Fix crash in DaemonRouter::PushMessage.

Change-Id: I0d832297d9d2a45b54ff6e28da38adcf48361e79
ALLJOYN-1743 Eliminate unbounded queue sizes.
Release lock before sleep.
Preinstalled daemon should exit within 5-10 seconds.

Change-Id: Iadad0e71988f3cfa30a3750729848d559d0434d9