New license header introduced to the Core project.

Also, remove DolLoader.h, it doesn't have any use. Boot_DOL.cpp/.h supercedes it.
New license header introduced for DiscIO, AudioCommon, InputCommon, VideoCommon, and Common projects.
New license header introduced to all Video based projects.
Lastly - new license header introduced to main Dolphin project. All done now.
Tweaked the aram dma exception timing to fix the hang that occurred in Viewtiful Joe.