* OpenAL backend is enabled by default on Haiku
* bswap include now makes use of builtins if they exist
* Use a local fgetws method for Haiku to avoid crashes
* OpenGL renderers are completely disabled on Haiku (they do not work)
* Software renderer is a widget, not a window on Haiku (fixes blank screen)
* Add option to disable System MIDI at compile time
* Probably unresolved external due to newer gcc, thus
added libsdl to libui.a as well.
* Make it work for all distros, which either have SDL2::SDL2
or ${SDL2_LIBRARIES}, provided by sdl2-config or FindSDL2.cmake.
Signed-off-by: Andreas J. Reichel <homebase_ar@web.de>
