2.50:

svn merge https://svn.blender.org/svnroot/bf-blender/trunk/blender -r19820:HEAD

Notes:
* Game and sequencer RNA, and sequencer header are now out of date
  a bit after changes in trunk.
* I didn't know how to port these bugfixes, most likely they are
  not needed anymore.
  * Fix "duplicate strip" always increase the user count for ipo.
  * IPO pinning on sequencer strips was lost during Undo.

source/gameengine/GameLogic/SCA_PropertyEventManager.cpp

@@ -50,8 +50,9 @@ SCA_PropertyEventManager::~SCA_PropertyEventManager()
 void SCA_PropertyEventManager::NextFrame()
 {
 	// check for changed properties
-	for (set<SCA_ISensor*>::const_iterator it = m_sensors.begin();!(it==m_sensors.end());it++)
+	SG_DList::iterator<SCA_ISensor> it(m_sensors);
+	for (it.begin();!it.end();++it)
 	{
-		(*it)->Activate(m_logicmgr,NULL);
+		(*it)->Activate(m_logicmgr);
 	}
 }