Improvements: Now evas rendering loop is the one responsible to
initialize the surface to 0 correctly (taking into account surface
alpha and object opacity). This will reduce the number of memset
we do.
Note: Current software_x11 (xlib and xcb) are buggy. They are
copying too much data when the surface use a mask. That's why
two memset are left in their code. They could be removed, but
we should fix the surface we copy on change (look at mxob user
and evas_software_xlib_x_output_buffer_paste).
SVN revision: 41206
Cedric BAIL
Carsten Haitzler