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/Utils/b3Clock.h

@@ -22,7 +22,12 @@ public:
 
 	/// Returns the time in us since the last call to reset or since 
 	/// the Clock was created.
-	unsigned long int getTimeMicroseconds();
+	unsigned long long int getTimeMicroseconds();
+
+	/// Returns the time in seconds since the last call to reset or since 
+	/// the Clock was created.
+	double getTimeInSeconds();
+
 private:
 	struct b3ClockData* m_data;
 };