Squashed commit of the following:

commit ce4972f5910f14147183fa67d34248c563695929
Author: Jesse Stimpson <jstimpson@bandwidth.com>
Date:   Tue Mar 25 21:03:27 2014 +0000

    use an explicit utrace severity to avoid performance issues in the console backend - debug logs will be skipped right away

commit e968216a00f2c4c246371507c0cb5c9da493c78d
Author: Jesse Stimpson <jstimpson@bandwidth.com>
Date:   Mon Mar 3 13:40:23 2014 +0000

    formatter must supply full binary to send on the wire

commit 1341d03ae8c946627cae5e4b3a69ffa33ce23dcf
Author: Jesse Stimpson <jstimpson@bandwidth.com>
Date:   Thu Feb 13 21:36:29 2014 +0000

    re #4358 : lager_tcp_backend uses a configurable module to format trace log statements and communicate with listening server over tcp