OS X: A few small tweaks for Cocoa windows.  Clearing the framebuffer right away, fixing multisampling for example
OS X: A few small tweaks for Cocoa windows.  Clearing the framebuffer right away, fixing multisampling for example

--HG--
branch : v1-7

digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre,digimatic/ogre