|SOURCE|
[Common::Renderer::CanvasDescription]
* Moved the implementation details of ColourFormat and DepthStencilFormat to a
  common source file
[Common::System::Window]
* Added EGL types to the X11+EGL configuration for Pandora
[PandoraLinux::Renderer::PandoraLinuxRenderer]
* Destructor takes care of nulling the GL context and destroying it
* Create initialises an EGL-enabled window (no further than that, still need to
  set up the window's surface and make the GL context current