Require older version of coverage for Travis build
Created by: SunilMohanAdapa
@BobGirard , you are right about latest version of coverage causing the problem. However, instead of upgrading Python version (which is still not possible for us unfortunately), I have installed particular coverage version. Please review this change.
This patch installs coverage 3.7 instead of latest coverage 4.0 on Travis before a build. Coverage 4.0 does not support Python 3.2. Due to need for system-installed, python-dependency packages and due to Travis infrastructure using Ubuntu 12.04, we can only build on Python 3.2 in Travis.