Brand new DirectFB engine.

Brand new DirectFB engine.

ProFUSION funded the rework of DirectFB engine, it works quite well,
please report problems with it and be sure to try to uncomment the
following lines to see if it helps:

evas_engine.c: (uncomment if you notice problems)
    //#define DFB_USE_EVAS_IMAGE_DRAW 1
    //#define DFB_USE_EVAS_RECT_DRAW 1
    //#define DFB_USE_EVAS_POLYGON_DRAW 1
    //#define DFB_UPDATE_INDIVIDUAL_RECTS 1

polygon.c: (comment if you notice slowdowns, but may lead to visual problems)
    #define USE_SPAN_RECTS 1

You can also turn on debug by uncommenting in evas_engine.c:
    //#define DFB_DEBUG_IMAGE 1
    //#define DFB_DEBUG_FLAGS 1
    //#define DFB_DEBUG_ACCELERATION 1

Thanks to Denis Oliver Kropp (dok) for review and patches!

git-svn-id: svn+ssh://svn.enlightenment.org/var/svn/e/trunk/evas@35904 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33