Applied pack unpack from Pablo Martin (caedes),

http://projects.blender.org/tracker/?func=detail&atid=127&aid=3246&group_id=9
adds

Blender.c:
Blender.UnpackModes (dict with the unpack modes)
Blender.UnpackAll(mode)
Blender.PackAll()
Blender.CountPackedFiles()

Image.c:
image.packed (this was working)
image.pack()
image.unpack()

Sound.c:
sound.packed
sound.pack()
sound.unpack()

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

@@ -50,6 +50,7 @@ class Sound:
     This object gives access to Sounds in Blender.
   @ivar name: The name of this Sound object.
   @ivar filename: The filename (path) to the sound file loaded into this Sound
+  @ivar packed: Boolean, True when the sample is packed (readonly).
      object.
   """
 
@@ -114,3 +115,21 @@ class Sound:
     @param f: the new pitch value in the range [-12.0, 12.0].    
     """
 
+  def pack():
+    """
+    Packs the sound into the current blend file.
+    @note: An error will be raised if the sound is alredy packed or the filename path does not exist.
+    @returns: nothing
+    @rtype: none
+    """
+
+  def unpack(mode):
+    """
+    Unpacks the sound to the samples filename.
+    @param mode: One of the values in Blender.Unpackmodes dict.
+    @note: An error will be raised if the sound is not packed or the filename path does not exist.
+    @returns: nothing
+    @rtype: none
+    @type mode: int
+    """
+