The cursor implementation is generic GL(ES) code that should be shared
by all the present and future egl-based embedded platform
plugins. Follow the pattern of QEGLPlatformContext and move this class
into eglconvenience as QEGLPlatformCursor.
Similarly, the common bits from the context implementation context are
moved back to EGLPlatformContext.
eglconvenience has now base classes for integration, screen, window,
etc. too. By using these, eglfs becomes much smaller and cleaner. This
also paves the way for creating new, separate EGL-based platform
plugins for Android, embedded Linux, etc.
Also added some documentation to each of the base classes.
devicediscovery is now fixed to be usable on any platform. The
implementation in this case is naturally a dummy one. This finally
allows using it from anywhere without myriads of ugly ifdefs.
Change-Id: I02946e360c04e02de7fe234a23a08320eff4ccf5
Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>
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