[AD] Examples, current SVN

[Evert Glebbeek <eglebbk@xxxxxxxxxx>]

The following examples are currently broken for me (in OS X):

ex_bitmap_target - Don't know if this is intentional or not, but when  
using "forced bitmap locking", the red square leaves a ghost trail  
behind when moving in the yellow square. "Drawing directly to bitmap"  
shows no such trail.

ex_membmp - the memory bitmap doesn't show up, all I see is a diagonal  
line textured with the bitmap it's supposed to show.

ex_draw - actually, I'm not sure whether this is a bug or not, but it  
looks like it to me: on the first screen (with the boxes), the top- 
left box has the outline and the filling aligned properly, but going  
to the right the outline drifts away from the filling, similar going  
down. The second screen has the same problem with red outlines, and in  
addition some of the pixels in the boxes are missing, overdrawn, or  
outside the outline. Same for the circles in the second and third  
examples. The lines in the last example have a similar problem of the  
red guides not lining up properly.
Let me know if it's useful for me to show a screenshot.

ex_expose - all I get now is a blank (white) window; this might be an  
OS X problem.

In other news, ex_pixelformat seems to be working properly here.  
ex_prim no longer draws over the text if I switch "background" off, in  
fact that doesn't appear to do anything.

Evert