Jdmundrawala/11 stable bash

@adamedx @schisamo @sersut @randomcamel 
Take a look please. There will be one change (working on it after I kick off a build), and that is the repo name. It will be msys-bash.
The msys build script generates the lzma file, but we should definitely add lzma support to the omnibus framework. I will look into how to do that.