shared/avdef : changed to avutil module.
shared/avutil : Created a convert function that wraps sws_scale.
tests/avutil : added some unit tests for avutil module.
output/* : added conversion to RGBA format on output.
output/main : made output more consistent.
output/main : fixed continuous play and output format.
renderer/renderer.* : started implementing rendering module.
renderer/* : Implemented more of the renderer module.
renderer/renderer : more renderer implementation
renderer/* : put src image into cv image container.