About OpenGL and NSView

[Xavier Glattard]

Hi

I would like to post some changes about OpenGL support.
(in gui and x11-back, soon in win32-back)

I need to add a flag in NSView (in the _rFlags bit field). I think it 
would not break anything but i may miss something.

Any advice ? Thanks!

Fred: I've just updated my tree with your last changes some days ago.
Revision 27944 seems to break NSOpenGLView position: the view is moves 
left and up -ward.
IMHO settting the background color (Rev 27945) is useless because the GL 
context MUST clear the background (on my system).

-- Regards
Xavier