Introduce a console class into buildr that will eventually replace the requirement on the Highline dependency. 

The highline dependency is used for interacting with the user at the console and coloring the output. Unfortunately there has been significant issues trying to get it to work consistently across platforms and across ruby implementations. 
  
The first step is to replace usage of the coloring functions with custom code simplified for our very specific needs.

git-svn-id: https://svn.apache.org/repos/asf/buildr/trunk@1530559 13f79535-47bb-0310-9956-ffa450edef68