We have a bunch of 3rd party related code and handling in our mainline trunk repository. This includes the following:
1) The explicit handling of the Epiphan VGA2USB in the CA (aka, the Kangaroo patch)
2) The Epiphan MCD related workflow operations in the default workflow
3) The NCast related workflow operation handlers in matterhorn-composer
These should all be removed before 1.4 is released in the interest of fairness.