Trying to fix bug reported by Peter den Bak and Meino Christian Cramer (thanks!):

-- splash screen disappeared (duh, I did that!) and Blender quits upon exiting from some 225 games:

It was troublesome to find how to run demos in general with the screen correctly redrawn before they started, etc.  Ended up making the above error in screenmain().  About the games, I don't have them and will need some time to get the files for testing, but I'll do it, though only on linux.

BPython:
-- Window: added GetScreens, SetScreen and improved GetScreenInfo.
-- Object, NMesh: updated (added in NMesh) method getMaterials to return either only valid materials as before or also empty slots (as None).  This previous omission can be considered a bug, since it made info about materials incomplete / incompatible with face mat indices.  Thanks Yann Vernier for bringing this up and sending/proposing a patch that also fixed a bug related to assigning lists of materials with different lengths to obj and its mesh. setMaterials also accepts Py_None entries now, which become empty slots in Blender.
-- doc updates.

source/blender/python/api2_2x/doc/Object.py

@@ -277,9 +277,12 @@ class Object:
     @return: a python action.
     """
 
-  def getMaterials():
+  def getMaterials(what = 0):
     """
     Returns a list of materials assigned to the object.
+    @type what: int
+    @param what: if nonzero, empty slots will be returned as None's instead
+        of being ignored (default way). See L{NMesh.NMesh.getMaterials}.
     @rtype: list of Material Objects
     @return: list of Material Objects assigned to the object.
     """
@@ -492,7 +495,7 @@ class Object:
   
   def shareFrom(object):
     """
-    Link data of self with object specified in the argument. This works only
+    Link data of object specified in the argument with self. This works only
     if self and the object specified are of the same type.
     @type object: Blender Object
     @param object: A Blender Object of the same type.
@@ -710,4 +713,4 @@ class Property:
     """
     Get the type for this property.
     @rtype: string
-    """
+    """