update bullet so it actually works

Moved the addSourceDirectory for physics/Bullet into the Engine/Source/CMakeLists.txt file that way it can actually appear where we expect it to in the solution explorer.

Engine/lib/bullet/examples/SoftDemo/SoftDemo.h

@@ -1,7 +1,7 @@
 
 /*
 Bullet Continuous Collision Detection and Physics Library
-Copyright (c) 2003-2006 Erwin Coumans  http://continuousphysics.com/Bullet/
+Copyright (c) 2003-2006 Erwin Coumans  https://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.
@@ -19,12 +19,6 @@ subject to the following restrictions:
 #ifndef SOFT_DEMO_H
 #define SOFT_DEMO_H
 
-class CommonExampleInterface*    SoftDemoCreateFunc(struct CommonExampleOptions& options);
-
-
-#endif //CCD_PHYSICS_DEMO_H
-
-
-
-
+class CommonExampleInterface* SoftDemoCreateFunc(struct CommonExampleOptions& options);
 
+#endif  //CCD_PHYSICS_DEMO_H