shrink down cube size of BasicDemo 10 times (it looked ginormous in VR) from 2x2x2 meter to 0.2

add test for VR HUD/sub-titles
fix issue in previous commit, partial string use %.8s not %8.s
use long long int in b3Clock
fix warning/error in pointer alignment in serialization
Fix pybullet Windows compilation.
(thanks to bkeys/https://github.com/bulletphysics/bullet3/pull/687)

examples/MultiThreading/b3Win32ThreadSupport.h

@@ -74,7 +74,8 @@ public:
 									m_userThreadFunc(userThreadFunc),
 									m_lsMemoryFunc(lsMemoryFunc),
 									m_numThreads(numThreads),
-									m_threadStackSize(threadStackSize)
+									m_threadStackSize(threadStackSize),
+									m_priority(0)
 		{
 
 		}
@@ -84,6 +85,7 @@ public:
 		b3Win32lsMemorySetupFunc	m_lsMemoryFunc;
 		int						m_numThreads;
 		int						m_threadStackSize;
+		int						m_priority;
 
 	};