Replace render_multi_image() with draw_sprite()

[gheskett]

This function is more stable and can handle more use cases than render_multi_image() could. It can handle fractional scaling and also doesn't suffer from the seams that ParaLLEl displays when upscaling texrects.

It does have some minor drawbacks though, mainly that it doesn't handle the complete displaylist for the user (mainly to allow customization of primitives outside of the function). It also isn't currently as optimized as render_multi_image() was for combiner and render modes (though these can also still be handled manually outside of the function).

Neither function supports rendering of CI textures still.

[aglab2]

Works really well but I believe it is a good idea to add an example how to setup basic rendering. For example

gDPPipeSync        (dlHead++);
gDPSetTexturePersp (dlHead++, G_TP_NONE);
gDPSetCombineMode  (dlHead++, G_CC_FADEA, G_CC_FADEA);
gDPSetTextureFilter(dlHead++, G_TF_POINT);
gDPSetCycleType    (dlHead++, G_CYC_1CYCLE);
gDPSetRenderMode   (dlHead++, G_RM_XLU_SURF, G_RM_XLU_SURF2);
gDPSetEnvColor     (dlHead++, 255, 255, 255, alpha);

draw_sprite(&dlHead, ...);

gDPPipeSync(dlHead++);
gDPSetTexturePersp(dlHead++ , G_TP_PERSP);
gDPSetCombineMode(dlHead++  , G_CC_SHADE, G_CC_SHADE);
gDPSetTextureFilter(dlHead++, G_TF_BILERP);
gSPEndDisplayList(dlHead++);