[Lazarus] Patch to add multi-sampling (anti-aliasing) to T[Custom]OpenGLControl

[Michalis Kamburelis]

Hi,

For those using TOpenGLControl component in Lazarus: I just submitted a 
patch that adds new property MultiSampling that allows to easily turn on 
anti-aliasing for OpenGL contexts. The patch and description is on

   http://bugs.freepascal.org/view.php?id=22026

The patch is by Jan Adamec and me. The new TOpenGLControl.MultiSampling 
property also happens to be compatible with my 
TCastleWindow.MultiSampling property in my "Castle Game Engine" :)

Michalis