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* Game and sequencer RNA, and sequencer header are now out of date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/Ketsji/BL_Material.cpp

@@ -27,6 +27,11 @@ int getNumTexChannels( Material *mat )
 }
 
 BL_Material::BL_Material()
+{
+	Initialize();
+}
+
+void BL_Material::Initialize()
 {
 	rgb[0] = 0;
 	rgb[1] = 0;
@@ -52,7 +57,7 @@ BL_Material::BL_Material()
 	mode = 0;
 	material = 0;
 	tface = 0;
-	material_index = 0;
+	materialindex = 0;
 	amb=0.5f;
 	num_enabled = 0;
 	num_users = 1;