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* Game and sequencer RNA, and sequencer header are now out of date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.

release/scripts/bpymodules/BPyMesh_redux.py

@@ -25,7 +25,6 @@ import Blender
 import bpy
 Vector= Blender.Mathutils.Vector
 Ang= Blender.Mathutils.AngleBetweenVecs
-CrossVecs= Blender.Mathutils.CrossVecs
 MidpointVecs= Blender.Mathutils.MidpointVecs
 import BPyMesh
 
@@ -198,8 +197,8 @@ def redux(ob, REDUX=0.5, BOUNDRY_WEIGHT=2.0, REMOVE_DOUBLES=False, FACE_AREA_WEI
 			# the point of collapsing.
 			
 			# Enlarge so we know they intersect:  self.length*2
-			cv1= CrossVecs(v1no, CrossVecs(v1no, v1co-v2co))
-			cv2= CrossVecs(v2no, CrossVecs(v2no, v2co-v1co))
+			cv1= v1no.cross(v1no.cross(v1co-v2co))
+			cv2= v2no.cross(v2no.cross(v2co-v1co))
 			
 			# Scale to be less then the edge lengths.
 			cv2.length = cv1.length = 1