Upgraded to Bullet 2.74. The upgrade introduced a few bugs, which need to be fixed before Blender 2.49.

In particular, the Bullet vehicle seems broken, and some soft-body demos don't work.
No new features or benefits are added yet, but a few improvements are planned before Blender 2.49 release.

Please update the build systems, and add those 3 files:
extern/bullet2/src/BulletCollision/CollisionDispatch/btActivatingCollisionAlgorithm.cpp
extern/bullet2/src/BulletCollision/CollisionDispatch/btGhostObject.cpp
extern/bullet2/src/BulletCollision/CollisionShapes/btConvexPointCloudShape.cpp

I'll watch the Blender mailing list, in case this commit causes some issues.

1 files changed, 10 insertions, 7 deletions

diff --git a/extern/bullet2/src/BulletCollision/BroadphaseCollision/btDispatcher.h b/extern/bullet2/src/BulletCollision/BroadphaseCollision/btDispatcher.h
index 6db71a0170e..ee57aa96151 100644
--- a/extern/bullet2/src/BulletCollision/BroadphaseCollision/btDispatcher.h
+++ b/extern/bullet2/src/BulletCollision/BroadphaseCollision/btDispatcher.h
@@ -46,22 +46,25 @@ struct btDispatcherInfo
 		m_enableSPU(true),
 		m_useEpa(true),
 		m_allowedCcdPenetration(btScalar(0.04)),
+		m_useConvexConservativeDistanceUtil(true),
+		m_convexConservativeDistanceThreshold(0.0f),
 		m_stackAllocator(0)
 	{
 
 	}
 	btScalar	m_timeStep;
-	int		m_stepCount;
-	int		m_dispatchFunc;
+	int			m_stepCount;
+	int			m_dispatchFunc;
 	mutable btScalar	m_timeOfImpact;
-	bool	m_useContinuous;
+	bool		m_useContinuous;
 	class btIDebugDraw*	m_debugDraw;
-	bool	m_enableSatConvex;
-	bool	m_enableSPU;
-	bool	m_useEpa;
+	bool		m_enableSatConvex;
+	bool		m_enableSPU;
+	bool		m_useEpa;
 	btScalar	m_allowedCcdPenetration;
+	bool		m_useConvexConservativeDistanceUtil;
+	btScalar	m_convexConservativeDistanceThreshold;
 	btStackAlloc*	m_stackAllocator;
-	
 };
 
 ///The btDispatcher interface class can be used in combination with broadphase to dispatch calculations for overlapping pairs.