add GImpact and BulletSoftBody, until we have replacement (otherwise it prevents people from migrating to the github/Bullet3 repository)
Add the old Bullet 2.x obsolete demos, and CMake buildsystem files, and gradually move them to newer Bullet 3.x structure
Use statically linked freeglut, instead of dynamic glut for the obsolete Bullet 2.x demos
Add the 'reset' method to b3GpuDynamicsWorld, and use it in the BasicGpuDemo (pretty slow in debug mode, use release mode)
Don't crash in btCollisionWorld, if there is no collision dispatcher
add Bullet icon files
prepare for Bullet 2 demo collection
fix Mac OSX version of preparation of AllBullet2Demo collection