add Intel build support for the OpenCL cloth demo, and use the bullet_logo.png

Thanks to ggjunker for the patch, see Issue 533

LICENSE

@@ -1,6 +1,6 @@
 /*
 Bullet Continuous Collision Detection and Physics Library
-Copyright (c) 2003-2006 Erwin Coumans  http://continuousphysics.com/Bullet/
+Copyright (c) 2003-2011 Erwin Coumans  http://bulletphysics.org
 
 This software is provided 'as-is', without any express or implied warranty.
 In no event will the authors be held liable for any damages arising from the use of this software.
@@ -14,6 +14,4 @@ subject to the following restrictions:
 */
 
 All files in the Bullet/src folder are under this Zlib license.
-Optional Extras/GIMPACT and Extras/GIMPACTBullet is also under ZLib license. Other optional external libraries in  Extras/Demos have own license,see respective files.
-
-This means Bullet can freely be used in any software, including commercial and console software. A Playstation 3 optimized version is available through Sony.
+Files in the Extras and Demos folder may have a different license, see the respective files.